Time Pressure, Wandering Monsters, and D&D’s Social Contract

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In 1980, Dungeons & Dragons players at my high school traded stories that confirmed Tomb of Horrors as the HARDEST DUNGEON EVER. Then someone told me how to beat it. Just hire a bunch of guys with shovels to excavate the tomb from the skull-faced hilltop down. A laborer worked for as little as 1 gp per month. The excavation takes months in the game world, but only a moment in the real world. Digging out the tomb avoids most of its perils. Most. I don’t think the job site’s days-without-an-accident sign will often count past 0.

In a D&D game without time pressure, all the risk and adventure disappear.

In the original D&D game, time pressure came from the threat of wandering monsters. At the end of every 10-minute turn, the dungeon master checked for wandering monsters. On a d6 roll of 6, monsters appeared and probably attacked. These fights punished delay by forcing adventurers to risk death fighting for pocket change—if that. Most monsters lack pockets.

When a dungeon lacks wandering monsters, players can slow the game by taking meticulous care, searching everything, checking everything, accomplishing nothing. If characters have ample time, many dungeon obstacles disappear. Locked doors fall to axes; walls fall to picks. The Tomb of Horrors stands no chance against a bunch of guys with time and shovels.

Wandering monsters made dungeons work

The threat of random attacks forces urgency on players. Instead of slowing down for painstaking caution, and instead of stopping to dig around obstacles, characters have to keep moving.

In 1974, wandering monsters did little to diminish D&D’s fun. Even the most routine fights still seemed fresh and exciting.

The original rules made timekeeping easy. Combat aside, most actions in a dungeon took a 10-minute turn and every turn brought a chance of an encounter.

Exploring dungeons did take characters a surprising amount of time. In a 10-minute turn, a typical party could explore just 60 feet of tunnel. “Mapping and casually examining” a 20×20 foot room took 10 minutes, then a search took another 10. For every hour in the dungeon and after every battle, characters required a 10-minute rest. By the rules, searching and mapping took much longer than anyone but Gary Gygax figured.

All the while, wandering monsters kept coming, depleting precious spells and hit points.

Keeping time

The Advanced Dungeons & Dragons rules challenged DMs to do more timekeeping. “It is essential that on accurate time record be kept so that the DM can determine when to check for wandering monsters and in order to keep a strict check on the duration of some spells,” Gary explained in the Dungeon Master’s Guide. “Keep a side record of time on a separate sheet of paper, marking off the turns as they pass.”

While timekeeping and wandering monsters kept dungeon crawls moving, players came to dislike the bookkeeping and the interruptions.

Timekeeping created a chore with little payoff. Besides, figuring the passage of time in the game world seemed like guesswork.

Wandering monsters work better when they remain only a threat

The threat of wandering monsters speeds the game, but the actual monsters just stall the narrative. As D&D players began focusing on stories, wandering monsters seemed like a distraction. Nobody wanted to pause their quest to battle 1d4 random basilisks.

Even Gary seemed to lose interest in wandering monsters. His introduction to the Dungeon Master’s Guide allowed DMs to skip them to maintain excitement. “The rules call for wandering monsters, but these can be not only irritating—if not deadly—but the appearance of such can actually spoil a game by interfering with an orderly expedition.” Gary made wandering monsters easy to skip. In the AD&D rules, he forgot to explain when or how to roll for wandering monsters. Nobody noticed.

By fourth edition, D&D eliminated wandering monsters. DMs built encounters according to a precise recipe that required planning, and not the whim of the dice. And because each encounter took an hour or more to play, the game could hardly spare time for random delays that fail to advance the narrative.

The fifth-edition designers returned random encounters to the game, but without much enthusiasm. The Dungeon Master’s Guide warns, “You don’t want to spend time distracted by random encounters that add nothing to the adventure narrative or that interfere with the overall pace you’re trying to set.”

Even though wandering monsters fell from favor, few players saw a sudden rise in tedium.

Action and D&D’s social contract

To keep a brisk pace, many D&D games just rely on the game’s social contract. Players recklessly advance their characters through the dungeon because stopping would bore everyone. Even Gary recommended using social pressure to discourage plodding. The Dungeon Master’s Guide, he advises DMs to mock “over-cautious behavior as near cowardice.”

Tomb of Horrors has no wandering monsters and no time pressure, but when Gary ran it at home, his players finished quickly. Rob Kuntz finished in 4 hours.

Characters can hire crews with shovels, but nobody wants to play that way.

Tomb of Horrors heads a long list of published D&D adventures that lack time pressure. Even when adventures press characters to finish in days, the pressure never trickles down into the dungeon. If the characters fight a long campaign against evil, a few extra days spent in a dungeon hardly matter.

Thanks to the social contact, these dungeons still work, but real time pressure improves adventures.

Too often, players realize that they can rest and resupply after every 5-minute adventuring day. Suddenly they must choose whether (a) to press recklessly ahead for no good reason or (b) to follow a safe and tiresome strategy. No game—no adventure—thrives by forcing players to choose between fun and an optimal strategy.

Next: What could be better than wandering monsters?

The best of D&D’s Appendix N: The Broken Sword by Poul Anderson

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In the original Dungeon Master’s Guide, Appendix N lists the books that inspired Gary Gygax in the creation of Dungeons & Dragons. Gary cites three books by Poul Anderson.

Of the titles, D&D fans tend to give Three Hearts and Three Lions the most attention because it contains the roots of the paladin, the troll, and of law and chaos. But as a read, Three Hearts and Three Lions pales next to Anderson’s finest fantasy, The Broken Sword.

Poul Anderson's The Broken Sword 1971 edition

Poul Anderson’s The Broken Sword 1971 edition

With The Broken Sword, Poul Anderson writes a book inspired by the same Norse sagas that fired Tolkien’s imagination. But while a nostalgia for an idyllic past colors Tolkien’s work, The Broken Sword hews closer to the bleak reality of history. The heroes of The Broken Sword see murderous viking raids as an ordinary summer, and enslaving thralls as the prerogative of the strong. Here, the elves and other “good” faerie folk seem as dangerous and amoral as the trolls and goblins—all well suited for frightening a skald’s listeners around the fire. If you think fey creatures lack menace, then the The Broken Sword becomes required reading. Both gods and faerie bring doom to the mortal men unlucky enough to cross paths.

The story turns on a witch’s entirely-justified quest for revenge. No fairy tale plot of poison apples or spinning wheels, her plan relies on cunning and dark bargains. The story adds a changeling, an apocalyptic war between elves and trolls, forbidden love, and a demon-haunted runesword. The Broken Sword jams more passion and emotion in a slim volume than modern fantasies work into a fat trilogy. The tale’s villains earn nearly as much sympathy as the heroes. As the story hurtles forward, both heroes and villains call on ever more dangerous means to achieve their ends, knowing they draw closer to doom, but unwilling or unable to stop.

The book’s demonic runesword and growing sense of doom echo Michael Moorcock’s Elric saga because The Broken Sword provided half of Moorcock’s inspiration for Elric, and set the tone for Moorcock’s other fantasies. (The second half of Elric’s inspiration came from the notion of reversing Conan’s qualities, turning a mighty, barbarian warrior into a sickly, ultra-civilized sorcerer.)

Originally published in 1954, The Broken Sword quickly dropped out of print until 1971, when the success of the Lord of the Rings  opened the door for paperback reprints of other fantasies. For the 1971 printing, Anderson took the unusual step of revising the book. He drew on 16 years of additional writing experience to make it “more readable.” You can find an excellent account of the differences between the two editions in Broken In Two: Poul Anderson’s two versions of The Broken Sword.

About 20 years ago, I read the 1971 version. Recently, I read the 1954 original version. The original cuts closer to the flavor of the mythic sagas, complete with more ornate, more poetic language. Still, I favor the leaner prose of the revision. I suspect that, like me, most modern readers will find the 1971 edition “more readable.”

The Broken Sword ranks with Guy Gavriel Kay’s Tigana as my two, favorite single-volume fantasy books.

Three Traits that Good Dungeon Masters Need to Shine in Convention Games

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At game conventions, I like to wander the Dungeons & Dragons game tables, watching dungeon masters in action. I see plenty of skills worth copying. Nearly all DMs bring enough from their home games to run a fun session. But sometimes I see weaknesses too. All of us have areas to improve. By far, the most common flaws stem from traits seldom practiced at a kitchen table or at a friendly little game store. Convention games demand extra skills.

Project your voice. At home, you can look down at your papers while speaking like a golf announcer. At a convention, the din of 50 tables means conversational speaking gets lost. Players feel reluctant to stall the game, so they rarely ask you to repeat. Tim Kask, the first editor of The Dragon, played his first D&D game at Gen Con in 1974. He only heard half what the DM said, so he felt “completely bewildered.” Today’s players react the same way. They sit politely, lost and hoping to catch up. At a convention, look at the players as you speak, and then project your voice to the next table over. When I DM, I like to take the seat nearest to the wall so players facing me don’t hear extra noise from a table behind me. It can’t hurt.

Own the adventure. At a convention, most DMs work from an adventure written by another author. We probably don’t even get to choose which adventures we run.

A few dungeon masters muddle through such adventures with the enthusiasm they would bring to reading assembly instructions to someone with a screwdriver. Perhaps they apologize for aspects they don’t like, or share a monologue on their interpretation of the text, or meditate aloud on a non-player character’s motives. Stop that. When you run another author’s work, adopt it and find a way to love it as your own. If you need to make a few tweaks, then make them, but keep the adventure’s essentials intact. Some of the fun of organized play comes from sharing a common experience with folks who played the same adventures as you.

For an example of how I tweaked an adventure to suit me, see Running Shackles of Blood: Making the good adventure into a great session.

Fill the available time with a beginning, a middle, and an end. When I DM convention games, I often check my watch. I worry that players might suspect I have somewhere I would rather be, but really I’m tracking our progress. When folks sit down for a convention game, they want to experience a beginning, a middle, and an end. Also, they paid about $10 for the slot, so they want the game to fill most of the time.

To pace a convention adventure, you must estimate how long the finale will take. As you play through the middle, if scenes run long, plan short cuts that can take the characters to the end. Perhaps this means the players reach the final scene without meeting every challenge in the adventure. Or maybe the monsters in a drawn-out combat suddenly have 1 hit point. See How to end combat encounters before they become a grind.

In episode 3 of the DM’s Deep Dive podcast,  Shawn Merwin gives more advice on pacing D&D under time constraints. For the story of my struggle stretching a 2-hour adventure into a 4-hour slot, see What Murder in Balur’s Gate Taught Me About Engaging Players in Role Playing.

If you ever DM in public, mind your volume, enthusiasm, and the clock. All three skills come more from attention than from special expertise. These three small additions to your game will let your players see the talent you bring to your home game.

Spell Blow Back—How Part of D&D that Everyone Avoided Shaped the 5th-Edition Power Curve

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The original Dungeons & Dragons game featured some activities that most players didn’t enjoy and eventually came to skip. I already wrote about mapping. Unless your group plays D&D in a deliberately old style, you don’t draft a player as a mapper who struggles to translate room dimensions to graph paper.

Spells with punishing side-effects qualify as another nuisance that D&D players learned to skip.

With some spells, players could simply avoid the side effects. The risk of instant death tends to limit teleportation to safe, familiar locations. And when Polymorph Other threatened system shock or a loss of individuality, party members never volunteered to fight in the form of a dragon.

Sometimes, avoiding side effects meant avoiding the spells. I’ve never seen anyone cast Contact Higher Plane. Apparently, few players like risking their character to a random chance of insanity.

Wish brought a mini-game where the dungeon master to tried grant the letter of the wish while perverting its spirit. Players countered by attempting to phrase their wishes to avoid any punishing interpretations. By third edition, players could skip the mini-game by selecting a wish from a menu of approved options.

A few irresistible spells included punishing side effects that DMs often ignored.

Haste aged its target a year, which forced a severe downside on humans, but an insignificant one on elves—and on humans in casual games without either bookkeeping or a reckoning of calendar years.

Lighting bolts could hit a wall and double back on the caster. When players started treating bolts as billiard balls and demanded to hit every foe using a trick shot, I suspect many DMs gave up on the bounce-back rule.

Fireball proved most popular and suffered the worst side effects. The original version risked blow back. “Fire Ball will generally conform to the shape of the space (elongate or whatever).” This meant a Fireball confined to small dungeon places could easily blow back and damage player characters. This drawback not only threatened PCs, but it also weighed the game with complicated volume calculations. D&D blogger and college mathematics lecturer Delta dutifully did the math. “After years of applying this, let me offer a heartfelt mathematician’s ‘Aaaarrgghh!!!’”

Worse than damage, Fireball destroyed treasure. “Besides causing damage to creatures, the Fireball ignites all combustible materials in the burst radius, and the heart of the Fireball will melt soft metals such as gold, copper, silver, etc. Items exposed to the spell’s effects must be rolled for to determine if they are affected.” Hitting PCs with collateral damage hurt enough, but players hated seeing treasure within their grasp destroyed.

Gary Gygax saw the the gotchas as a test of player skill and relished enforcing the punishments. His son Ernie recalled casting Fireball and how his father “would always let you know whatever cool thing you had destroyed. Normally it was difficult to figure out what anything was, but once it was destroyed, my dad would share. ‘Oh, it’s a real shame.’”

Few others saw the fun. Ernie Gygax found the lost treasure so bothersome that his wizard Tenser developed the spell Cone of Cold specifically to avoid the drawbacks of Fireball.

Faced with Fireball’s volume calculations, with item saving throws interrupting the game, and with the protests of players, many DMs just ignored Fireball’s side effects.

But without the gotchas, Haste, Lightning Bolt, and especially Fireball offered much more power. By Gary Gygax’s calculation, Cone of Cold—a replacement for Fireball without the punishing side effects—rated as a 5th-level spell.

The 5th-edition rules rewrite Haste, Lightning Bolt, and Fireball without the downsides. Haste now requires concentration and just targets one creature, so it loses some of its old power. Wizards seldom prepare Lighting Bolt because Fireball overshadows it. But Fireball keeps all the punch of a 5th-level spell with none of the downsides of its 3rd-level origin. When wizards gain the ability to cast Fireball, they leap in power.

Rather than dropping the power of the best spell available to 5th-level wizards, the designers of 5th edition gave every class some new ability that matches the Wizard’s leap in power. Fighters gain a second attack, Monks gain Stunning Strike, Rogues gain Uncanny Dodge, and so on. For more, see The obvious innovation in fifth-edition Dungeons & Dragons that no designer saw before. I suspect the designers boosted Hypnotic Pattern from a average 2nd-level spell to an powerful (and annoying) 3rd-level spell so Bards could match that leap in power.

By the way, Cone of Cold isn’t the only spell made to avoid a part of D&D that players preferred to skip. Originally, some of D&D’s strategy came from the job of hauling coins out of the dungeon. Players hired bearers and bought mules to help. Still, no one found encumbrance fun or baggage trains heroic, and Gary must have noticed. He created Tenser’s Floating Disk on behalf of Ernie and every other player who wanted a painless way to recover every last copper from the dungeon.

Origins 2017: Choose Your Own Dungeons & Dragons Adventure

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This year at Origins, I split my time between serving as a dungeon master, and playing in Dungeons & Dragons games. Remember the disappearing McFly family photo from Back to the Future? It gave Marty McFly a look at his progress toward setting his future right. This year at Origins Game Fair, I ran an epic adventure that made me think of that photo. More on that later.

For many gamers, the Origins Game Fair feels just the right size. Unlike Winter Fantasy, the convention offers diversions beyond non-stop D&D. Unlike Gen Con, you don’t face a city and a convention center crowded to the limit. In 2015, Gen Con brought 61,423 unique visitors to Indianapolis. Origins 2016 brought 15,479 unique visitors to the similarly-sized city of Columbus. At Origins, you can reserve a hotel room without winning a lottery and you can pay for it without winning a lottery.

Goblins and scenery from Tomb of Annihilation

Elmwood adventures

I arrived with two convention-created adventures on my DM schedule. ELMW 2-1 Tendrils in the Fog and ELMW 2-2 Mists of the Moonsea read well. They land characters in vibrant scenes that promise to excite players. Both adventures feature a good mix of role-playing, investigation, and combat challenges. ELMW 2-1 takes players to villages and hideouts along the Moonsea, before ending in a small dungeon. ELMW 2-2 features battles on and under the sea, and ends with an ambush spanning a series of rope bridges. Both adventures pit the players against a group of adventurers cursed by evil. The foes resemble any number of morally questionable parties, perhaps dialed one notch darker. I loved these villains. ELMW 2-2 proved as fun as I anticipated.

An introduction to Tomb of Annihilation

I never ran ELMW 2-1 because the marshals needed an extra hand to run the introductory adventures for Tomb of Annihilation. I ran these adventures cold, reading one step ahead of the players. Each of this set of 5 missions plays in hour and a half or so. These adventures take characters to the jungle of Chult and the exotic Port Nyranzaru. Chult substitutes dinosaurs for shining knights and blood-sucking vines for wizards in pointy hats. Players feel like Indiana Jones in a lost world.

Most of the folks who come to play D&D at Origins rank as passionate players who bring a quiver of characters and who may play adventures more than once. The introductory adventures draw a different mix of players. First-timers and gamers who haven’t played since THAC0 join the D&D enthusiasts. The new and returning players bring a fresh enthusiasm that I savor. In the past, I haven’t volunteered for these introductory adventures, but next year, I plan to.

At conventions like Origins, where the dungeon masters belong to the Heralds Guild, we get scored based on players’ feedback. Running the introductory adventures cold lead to a dip in my score for preparation. I can’t argue with the accuracy, but seeing a drop in my overall judge scores disappointed me.

Hecatomb

This year, Origins hosted all three of the epic adventures that accompany Tales from the Yawning Portal. I played in Hecatomb, an epic for tiers 3 and 4.

Hecatomb’s author ramped up the difficulty of this adventure, even for tier 4. I love a challenge, so I welcomed the threat. I heard tales of tables practically wiped out. Meanwhile, at my table, two characters died, rose as undead, and attacked surviving players at other tables. One of the DMs administering the event went from table to table with a group of players running their now-undead PCs. The dead took revenge on the living. This “interaction” beats just having some evil champion roaming from table to table.

Hecatomb landed all the players on massive battlefield, scrambling to destroy arcane obelisks while fighting monsters. Presumably, our comrades in arms fought on battlemaps next to ours, facing other battles for other obelisks. By social convention, everyone agrees not to seek out the folks at the next table to form a party of 12.

Our party featured a crossbow expert/sharpshooter character—number 1 on my list of character types absurdly good at one thing. Even folks who play the combination find it overpowered. After taking casualties, our table changed strategy. We realized that the sharpshooter could safely destroy the obelisks and the monsters lurking two maps over, without ever letting threats come close enough to strike back. In this optimal strategy, my magic user’s best contribution was to cast Haste on the sharpshooter. Our melee characters could only “ooh” and “ahh” like an audience for Annie Oakley. Encounter designers need to consider sharpshooting just as they might consider something like flying. If you design an encounter where characters can engage foes from 500-yards away, then for parties with sharpshooters, the monsters resemble infantry crossing no-man’s land.

Return to White Plume Mountain

I ran Return to White Plume Mountain as a dungeon master. This epic accommodated both tier-2 and 3 characters. The tier-3 PCs fought to thwart a sacrificial ritual, while the tier-2 PCs attempted to distract the monsters, drawing them away from the main assault.

Return to White Plume Mountain worked hard to foster interaction. Some of its methods fascinated me.

A twist that required communication. Return gave each party a sending stone linked with another table. In many epics, such stones enable communication, but Return also included a clever trick that could foil groups who failed to communicate. In my session, some tables treated messages as a distraction and failed to notice the essential information. If more solutions come from messages between tables, the design would work even better.

Scoring that affected encounters for both tiers. Return featured a push-pull dynamic where each tier’s efforts drew monsters away from the other tier. Potentially, this could force tables to agree on a strategy that raises enough of a distraction to ensure success without drawing all the monsters into a deadly encounter. In practice, tier-2 tables just saw a distraction score that they could raise. Like any good gamers, they put all their energy to reaching a high score. Tables marched through the dungeon making more noise than a parade, without seeing the danger. In the end, tier 2 faced all the monsters.

The push-pull feature would work better if, instead of a rising score, the players saw the additional monsters in their future. Suppose some divination magic gives the PCs visions of their near future. This idea made me think of the McFly family photo—a vision of the future that results from the players’ current actions. I wanted a line of miniature figures that showed the monsters to come, but a scorecard handout would work as well. Back in How to forge the most epic multi-table role-playing event ever, I recommended letting players choose their own difficulty. In Return, a more visual push-pull mechanic would help.

Every table joined in the same battle. In the finale, all the tier-2 parties enter a massive dungeon room where they spot the ritual at the far side. An army of tier-3 monsters defend the ritual. As intended, the tier-2 parties stay on their side of the room and work to rescue sacrificial victims until tier 3 arrives near the heavy hitters to thwart the ritual. This works so long as the Tier-2 groups stay in their lane and avoid any bold ideas that might interfere with the ritual.

Step aside, pipsqueaks. I’ll finish this.

When I ran, my tier-2 group had little reason to stay in their lane. Before entering the final room, tier-2 table captains gather to share resources. Somehow, my table’s captain returned from the meeting with an allied planetar summoned by a tier-3 table. So a party clustered around level 7 added a challenge-rating-16 powerhouse with a fly speed of 120. I spent days wondering what part of the adventure let tier-3 tables share such resources with tier 2. What did I miss? The event’s one administrator was doing a job intended for three people, and I think he overlooked this extra interaction. But at the time, I figured the planetar came approved by the boss.

When my group entered battle arena and saw the ritual on the far side, they wondered whether to send their planetar to intervene. In one round, the celestial could have flown across the entire room, engaged the villain, and dealt lethal damage, while using innate Truesight to foil the Contingency intended to keep the villain alive. Before 6 tables even reached the final encounter, the event administrator could have stood and announced the abrupt victory to all 12 tables. “Now everybody has an extra hour for lunch. You can thank table 3 on the way out.”

Dungeon masters, choose your own adventure. In this situation, do you…

  • Tell the players you don’t care what anyone says. They can’t bring a planetar. (But the planetar came from the boss, and I can’t believe you’re saying “no” to your players.)
  • Let the planetar cross the room, then invent reasons that it fails to thwart the ritual. (You’re just abusing your power as a DM just to make the players fail.)
  • Pass the planetar back to the overextended event administrator and let him figure out what to do with it. (Just say, “Excuse me. I know that you’re already doing 3 jobs, but I can’t handle a little trouble at my own table.”)
  • Let the planetar solve the epic for all 12 tables. (Everybody, you’re welcome!)
  • Suggest that the players stay in their lane and use the planetar to help themselves. (Why should players have to meekly follow the author’s intent?)

My players stayed in their lane. I’m not particularly happy with the way I handled the situation. How would you do it?

D&D Open

In eight hours, the D&D Open aims to combine the fun and community of a battle interactive, with a measure of the competition of the old tournaments. The Open’s all-star team of authors, Teos Abadia, Shawn Merwin, and Sean Molley, capture all the challenge that made the original event such a blast. This year, I played as groups ventured to the jungle land of Chult to rob the tombs of dead gods. Monsters native to this lost world provided a unique flavor.

The event added a room of physical and mental challenges for Players—something like dungeon carnival games. Everyone seemed to enjoy this short break from the table.

The adventure also added the shtick of having a wandering monster roam from table to table to trade attacks. I only like this trick when the wandering menace comes from now-undead PCs. In a quasi-competitive event where players race against time, I disliked the gimmick more than usual. Fortunately, the interruption only takes a few minutes.

The event’s finale featured clever twist and a thrilling race to escape. The escape encouraged even faster play and set an objective other than kill everything. Once again, the D&D Open delivered the year’s best D&D game.

Challenging Your Players’ Skill Without Risking Frustration

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The Zork II computer game from 1981 includes a locked door that you can open by solving a clever puzzle. The door has the old-fashioned sort of lock that lets you look through the keyhole and see the other side. Except here, the key is in the other side of the lock. You slide a mat under the door, and then poke the key out onto the mat. When you pull the mat back, you have the key.Zork II Box Art

Back when Dungeons & Dragons consisted of the original brown box, before skills, before rogues, before thieves, all the obstacles in the game invited that style of play. You overcame obstacles by immersing yourself in the game world, making decisions, and problem solving. See A Lack of Ability Checks Shaped How People Originally Played Dungeons & Dragons.

This style of play suffers from the same problem as the puzzle in Zork. When Zork II came out, I had only ever seen that sort of old-fashioned lock in my grandma’s house. And if you’ve never examined that kind of lock, the door puzzle simply leaves you stuck and frustrated.

In the old computer adventure games, when you became stuck and frustrated, you had to send money for a hint sheet, and then wait for it to arrive in the mail.

Fourth edition attempted to eliminate such frustration by emphasizing skill checks and skill challenges over concrete obstacles and over players’ problem solving skills. During this era, Dungeon magazine’s submission guidelines warned authors to create challenges for the characters, not the players. When every obstacle has a DC and multiple skills, then no one gets frustrated. If you find a locked door, you can pick the lock with Thievery, or break the door with Athletics.

No one gets frustrated, but no one feels engaged either. When the game only challenges character skill, the players never need to make meaningful decisions or engage the game world. They just look at their character sheet for the best applicable skill. This improves on playing guess-the-solution-I-thought-of with an inflexible DM, but the picking a skill and rolling is less fun than D&D can be.

The fourth-edition designers must have know this, but they emphasized selecting skills and rolling outcomes for a two reasons:

  • To add weight to the choices players make when they build characters. See The Pros and Cons of D&D’s Ability Checks.
  • To prevent inflexible DMs from hurting the game. Fourth-edition designer Stephen Radney-MacFarland wrote, “In the early days, DMs all too often felt compelled to demonstrate their cleverness and punish players for making ‘wrong’ choices—even a choice as simple and random as which passage to explore.”

Such inflexible, punitive DMs neared extinction decades ago. When Mike “Sly Flourish” Shea asked players to cite the traits of a good DM, flexible ranked first.

Dungeon masters can challenge players without risking player frustration, because DMs can allow creative solutions.

Have you ever noticed how the Tomb of Horrors makes the demi-lich only vulnerable to a short list of curiously-specific attacks?

The demi-lich Acererak’s skull can be harmed only as follows:

      • a forget spell will force the skull to sink down without taking a soul
      • a shatter spell thrown at it inflicts 10 h.p. of damage
      • a power word, kill pronounced from the an astral or ethereal magic-user will destroy it.
      • only a fighter with a vorpal blade, a ranger with a sword of sharpness +5, or a vorpal weapon, or a paladin with the like or even a +4 weapon can inflict damage on the skull
      • an exorcise spell will cause it to sink as a forget does
      • a dispel evil spell inflicts 5 h.p. of damage
      • a holy word pronounced against it will inflict 20 h.p. of damage
      • a thief slinging one of the large gems in the crypt will inflict 1 h.p. of damage per 10,00 g.p. of value, i.e. 1, 5,, or 10 h.p. of damage, but the gem is thereby shattered

A power word, kill does nothing, unless you happen to be ethereal or astral! How would anyone think of that? Also, the demi-lich is vulnerable to the destruction of very expensive gems. That messes with the players in the best(?) old-school tradition. Only someone immersed in that tradition would even consider the gem attack.

Once, I thought that this list exposed Gary Gygax as an inflexible DM working to punish players. After all, he devised the tomb to challenge—and frustrate—those “fans who boasted of having mighty PCs able to best any challenge offered by the AD&D game.”

Now, I see the list differently. I suspect Gary created Acererak with no vulnerabilities in mind, but as he ran the adventure, players invented attacks. If Gary judged them reasonable, he allowed them to work. When Gary wrote the adventure for publication, he listed the attacks he had allowed so far.

Gary Gygax had the wisdom to allow a creative solution. In the Foreword to Return to the Tomb of Horrors, Gary wrote, “In one tournament use of the setting, a team managed to triumph by using the crown and scepter found earlier as the ultimate tool against the demilich. As Acererak’s skull levitated, one PC set said crown firmly upon the bony pate; another tapped the regal adornment with the ‘wrong’ end of the scepter. Poof! Scratch one demilich, and give the tournament’s first place to the innovative team of players who thought of this novel solution. Russ Stambaugh, the DM for the group, was stunned. ‘Could that work?’ he asked. I shrugged, admitted I certainly hadn’t thought of it and that it was a stroke of genius that deserved a reward.”

When I DM, I love to be surprised. One of the great joys of being a DM is crafting some trap or obstacle, leaving a couple ways to overcome it, and then watching as the players crack the problem with a third way. I’ve run campaigns for groups who proved so good at coming up with unexpected solutions, that I stopped worrying about planning any solutions. I just sat back and watched the players come of with something.

I have three bits of advice for refereeing game-world obstacles that demand player skill to overcome.

  • Watch the players for signs of frustration. Be prepared to let he characters uncover a new clue, or to just have something on the other side of that locked door come and open it.
  • It’s good to say yes, but avoid being too quick to accept implausible solutions. If a couple of players are deeply engaged in a predicament, and you allow any dumb idea to work, they just get annoyed. The last thing you want is a player arguing that something you allowed should fail.
  • Watch out for clever, repeatable ideas that break the game. I remember a player who regaled me with a story that he remembered fondly. His party defeated a dragon by enclosing it in a wall of force shaped like a giant fishbowl, complete with an opening on top too small for escape. Next, they created water above the opening, filling the fishbowl and drowning the dragon. I suspect that no version of Wall of Force ever actually allowed such shenanigans, but as a one-time trick, the stunt created a moment the players’ loved. I wonder what the DM decided to do when the players kept trying to repeat it. If you can use this trick on a dragon, the dungeon becomes your aquarium.

The Dungeons & Dragons Books that Secretly Previewed Each New Edition

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Dungeons & Dragons players have seen five editions plus a few versions that fall outside the count. We tend to see the release of a new Player’s Handbook as a clean break from the last, but each new edition received a preview in a book or two that appeared for the prior edition.

In a convention appearance, TSR designers Dave “Zeb” Cook and Steve Winter talked about how the first-edition books that reached print in 1985 led to 2nd edition. “Oriental Adventures was the big tipping point because Zeb Cook put a lot of really cool stuff in OA,” Winter said. “We felt like, wow it would be great if this was actually part of the core game, but it’s not.”

“Because of the way we had to treat those books, you couldn’t actually consider them canon when you were writing product or doing modules,” Cook explained. “You always had to assume that players only had the Dungeon Master’s Guide and the Player’s Handbook.”

From Oriental Adventures and the Dungoneer’s Survival Guide to 2nd edition

Oriental Adventures brought a taste of skills to D&D in non-weapon proficiencies. Characters gained skills such as calligraphy, etiquette, animal handling, and bowyer.

“One of the things dreadfully lacking from AD&D was any sense that your character had a real life beyond class skills,” Cook wrote. Non-weapon proficiencies “gave players a way to create a more culturally-informed background for their character.”

Ability checks reached AD&D in the Dungeoneer’s Survival Guide (1986). Although this book’s title suggests a focus on player strategy, this guide previewed rules innovations that appeared in 2nd edition. The non-weapon proficiencies from Oriental Adventures became options in the primary game. When players used non-weapon proficiencies, they made proficiency checks to determine the outcome. These checks operated like ability checks, but proficiency improved the chance of success. For more, see Ability Checks—From the Worst Mechanic in Role-Playing Game History to a Foundation Of D&D.

From Gamma World and Player’s Option: Combat and Tactics to 3rd edition

In a D&D podcast episode examining the 2nd edition, Steve Winter said, “There were all kinds of changes that we would have made if we had been given a free hand to make them—an awful lot of what ultimately happened in 3rd edition. We heard so many times, ‘Why did you keep armor classes going down instead of going up?’ People somehow thought that that idea had never occurred to us. We had tons of ideas that we would have loved to do, but we still had a fairly narrow mandate that whatever was in print should still be largely compatible with 2nd edition.”

TSR’s management required that AD&D stay broadly compatible with the original version, but other games allowed more innovation. Gamma World took D&D’s play style into a post-apocalyptic Earth. Crumbling buildings replaced dungeons, mutant powers replaced spells, mutated creatures replaced monsters, and so on. The 1992 edition of Gamma World took the current D&D rules and made changes from the 2nd-edition designers’ wish list:

  • Ascending armor class
  • Skills called skills
  • Attribute checks
  • Attribute modifiers similar to those that would appear in 3rd edition
  • Health and Mental Defense saves that resemble 3rd edition’s Fortitude and Will saves

This 4th edition of Gamma World set half of the blueprint for 3rd edition D&D. The other half came from Player’s Option: Combat and Tactics (1995).

Player’s Option: Combat & Tactics introduced the gridded battle map to D&D. In the Foreword, Skip Williams promises that, “You will find plenty of ways to make combat more than a dice-rolling contest or an exercise in subtracting hit points from your character’s total.” Combat & Tactics reads like an early draft of the 3rd edition combat rules, complete with rules for opportunity attacks, reach, cover, and critical hits. Combat & Tactics probably scared more players away from battle maps than it converted. The supplement moved deep into wargame territory, with over 250 pages of rules for facing, fatigue, and things like direct and indirect bombardment. However, the 3rd-edition designers chose the best of the innovations.

From Tome of Battle: Book of Nine Swords to 4th edition

In 2005, work on 4th-edition D&D started as a project codenamed Orcus. In Wizards Presents Races and Classes, lead designer Rob Heinsoo wrote, “Our instructions were to push the mechanics down interesting avenues, not to stick too close to the safe home base of D&D v.3.5.” The project team developed eight classes built around powers and giving every character some interesting action to choose each round.

Early in 2006, designers Rich Baker, Mike Donais, and Mike Mearls “translated current version of the Orcus I mechanics into a last-minute revision of Tome of Battle: Book of Nine Swords. It was a natural fit, since Rich Baker had already been treating the Book of Nine Swords as a ‘powers for fighters’ project.”

Tome of Battle: Book of the Nine Swords presented new martial classes for 3rd-edition D&D. The additions blended the unreal, cinematic stunts of Far-East action games and movies with a typical D&D game. Warriors gained maneuvers that worked like encounter powers in 4th edition.

Now, used copies of the Book of Nine Swords command high prices, a scarcity which might stem from meager sales in 2006. Nonetheless, the book offered a prototype for 4th edition.

From the D&D Essentials red box to 5th edition

Many fans of D&D felt the 4th edition no longer resembled the game they loved. A few years after the edition’s release, sales of the 3rd-edition D&D spinoff Pathfinder surpassed D&D. In an interview, Mike Mearls said, “No one at Wizards ever woke up one day and said ‘Let’s get rid of all our fans and replace them,’ that was never the intent. With 4th Edition, there were good intentions. The game is very solid, there are a lot of people who play it and enjoy it, but you do get those people that say ‘hey, this feels like an MMO, this feels like a board game.’”

Aside from a barely-noticed sample in the Book of Nine Swords, 4th edition came from a secret project. Rather than ask D&D fans what they wanted in D&D, the design team made assumptions and built a game based on them.

When Mike Mearls took control of the D&D team, he worked to reverse course. “We want D&D to be the best roleplaying game it can be. We’re always open to change, to reacting to what people say. The past is in the past, there’s nothing we can say or do. If you are a disgruntled D&D fan, there’s nothing I can say to you that undoes whatever happened 2 years ago or a year ago that made you disgruntled—but what I can do, what’s within my power is going forward, I can make products, I can design game material, I can listen to what you’re saying, and I can do what I can do with design to make you happy again.”

Just two years after 4th edition’s release, Wizards of the Coast couldn’t ask players to adopt another new edition. Instead, the D&D team tried to win back some unhappy players with the D&D Essentials line. A new, red-box starter set built on nostalgia for the game’s most-popular introduction. Essentials aimed to recapture “that core of what makes D&D D&D, what made people fall in love with it the first time, whether it was the Red Box in 83, the original three booklets back in 74 or 75 or even 3rd edition in 2004. Whenever that happened, to get back to what drew you into D&D in the first place and give that back to you.”

When Mearls gained time to create a 5th edition, he stuck with the same strategy of listening to the game’s fans. In another interview, he explained that he launched the open playtest “to get a sense of what people actually wanted out of D&D. The only real mandate was to make sure that we captured the essence of D&D. It was important that anyone who had played D&D in the past could play the new edition and have a clear sense that this was D&D.

“We were also committed to analyzing and using the playtest feedback to guide our decisions. Those might seem like fairly simple mandates, but it can be difficult for game designers to take a step back from their work and treat it with a cold, ruthless editorial eye.”

Dungeons & Dragons 5th edition hardly resembles 4th edition, but Essentials showed the way to the current game’s success.

The Pros and Cons of D&D’s Ability Checks

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In the early years of Dungeons & Dragons, players searched by telling the dungeon master where they wanted to look, and then the dungeon master told them if something was there. The game resolved most actions using back and forth dialog, plus clear cause and effect. Before skills and core mechanics, resolution relied on the on the logic of the game world. See A Lack of Ability Checks Shaped How People Originally Played Dungeons & Dragons.

Old-school gamers swear by this method, and with good reason: It grants players, and not the dice, control over their characters’ fates. It makes player decisions and ingenuity count. The details of the game world matter.

But some tasks demand a character’s talents to succeed, so this sort of resolution cannot cover every action: listening at doors, creeping behind an enemy, balancing atop a rope spanning a moat.

Once skills and ability checks entered the game, they began to spread. Over the years, D&D’s rules encouraged players to rely more on checks. This trend peaked in fourth edition. In skill challenges, players overcame obstacles by explaining how their character’s skills could help, and by rolling checks. As written, players never needed to engage the game world or to show ingenuity. They just found the best applicable skill.

Although fourth edition promoted checks more than many players wanted, the emphasis brought advantages.

Making characters unique

In the original D&D game, characters that shared a class and level all played about the same. Without ability checks, their ability scores rarely affected play. Without skills, they all featured the same capabilities.

The fourth-edition designers created a game optimized for a style of play where players built awesome characters and then showed them off in encounters—either battles or skill challenges. Character building became as much a part of playing D&D as time at the table.

By emphasizing checks, the game highlights each character’s talents and limitations. When a player invests in a persuasive character with a high charisma, they can win allies with a die roll. On the other side, if you play a character with an 8 Intelligence, your own brains cover some of your character’s stupidity, except when you make intelligence checks. You might solve a real puzzle, but an abstract one makes your character face a check.

Commenting on another post, Andrea Back describes it well, “Without skills, you end up with you playing you in a fantasy dress, with all your own limitations and qualities laid bare.”

On the other hand…

In the fourth edition, designers made the mistake of emphasized the parts of D&D that video games do best. If you want character building, electronic games offer more options, and you can play your character at any hour from the comfort of home. Tabletop games thrive when the focus on aspects that computers can’t match, so why focus on choosing skills and playing against random chance? By joining live players and a DM, we gain the ability to speak as our character and attempt any action, even ones not in the rules.

Skipping the dull parts

Sometimes a check can provide a shortcut for tasks that could prove dull. If the players want to search a cluttered room, but want to avoid the tedium of describing how they cut the straw mattresses, sift the dirt in the flowerpots, and so on and on, a check seems like a time saver. Fourth edition’s Streetwise skill seems contrived to skip the urban role-playing that the designers found tiresome.

On the other hand…

As a DM, I steer the game away from activities no one seems to enjoy, but I feel wary of letting someone use a die roll to cheat the other players out of the fun of interacting with the game world and actually playing the game. However, if the entire table agrees, we can just substitute a Wisdom (Survival) check for that trip to Tomb of Horrors.

Shaping the game

Different players favor at different parts of the D&D game. Some lavish attention on crafting characters. For them, the fun at the table comes from showing off their creations. Fourth edition was made for players like this.

Some players use their character to shape the sort of game they want to play. Sometimes this means making a character good in an area where the player feels weak. If you lack charm, but play a charismatic paladin, you can let a persuasion roll do all the talking. Even the most timid player can enjoy the benefits of a magnetic personality.

Sometimes players craft characters able to breeze through challenges that the player finds tiresome. They claim that their character has more brains, and ask to solve a puzzle with a check. I once met a player who optimized characters for combat because he wanted to speed through the battles.

On the other hand…

We gather at the game table to enjoy the tactics, ingenuity, and silly voices. Most of the time, we would rather act as our character rather than just rolling dice on their behalf.

More than once I’ve seen a player make an impassioned speech in character, asking the Baron, for instance, to defend the settlers. The player’s voice trembles with passion as she speaks of courage, loyalty, and the honor of the Baron’s ancestors, calling their spirits by name. The player steps down from atop a chair to applause and tearing eyes. But then, feeling bound by the system, I ask for a Charisma (Persuasion) check with the advantage earned for an outstanding performance. Then the orator rolls, and flubs. Sorry, you fail.

In situations beyond diplomacy, specific actions can also make a check seem pointless. If someone taps the bottom of a chest looking for the secret compartment, skip the search check and just reveal the location. If someone describes an ingenious use of leverage to lift a gate, skip the strength check.

Rolling for surprise

We all savor the split-second drama of waiting to see the outcome of a die roll. Every player remembers a moment when a lucky roll made a crazy, long-shot scheme work, or when bad rolls caused a plan to unravel and forced everyone to plan B and then to C. If these moments came from a DM’s ruling, they would seem like cases of DMs steering the game to fit their story. The magic comes because the dice twisted fate, making a surprise that proved unforgettable.

On the other hand…

Sometimes an extreme roll lets a 98-pound weakling batter open a door or causes the mighty barbarian to fall from a rope. Such outliers diminish the qualities that make characters unique.

On an unlikely success or failure, sometimes I use some outside cause to explain the fluke. If the barbarian falls, did the knot slip loose? If a clumsy oaf picks a lock, did someone just forgot the latch? By narrating a cause outside the character’s control, the effect remains, but the character still feels consistent.

Finding the sweet spot

If an elite acrobat sprints across a swaying rope bridge, do you require a check or just let them show off? If someone specifically examines the bottom of a chest, do they still need a roll to find the hidden panel there? Can someone skip a puzzle if their genius character aces an intelligence check? If someone offers a generous bribe to a corrupt guard, do they still need persuasion?

I don’t know, but when I reach the table, I can judge.

Some players love to roll dice. For them, the game only moves when they make rolls. Others like speaking in funny voices or solving puzzles and boast of sessions where no one rolled a die. Most players favor a style in the middle.

Original D&D and fourth edition mark extreme approaches to ability checks, from no checks to a game that can—if players choose—rely entirely on checks. Each approach brings some advantages. In our games, we can adopt either style—or find a balance that suits us.

Ability Checks—From the Worst Mechanic in Role-Playing Game History to a Foundation Of D&D

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Dungeons & Dragons makes ability checks a key part of play, but these checks took years to enter the game. How did ability checks advance from house rule, to optional rule, to a foundation of fifth-edition D&D?

Before D&D added ability checks, players found a style that mostly avoided a need for such rolls. See A Lack of Ability Checks Shaped How People Originally Played Dungeons & Dragons. Even so, characters tried things that the rules didn’t cover. For many of these actions, success or failure hinged on a character’s ability scores. Gary Gygax told dungeon masters to guess the odds of success and roll for it. But DMs and players wanted more consistency and less guessing.

In 1976, issue 1 of The Dragon printed “How to Use Non-Prime-Requisite Character Attributes” by Wesley D. Ives. The article proposes a sort of ability check before anyone coined a name for it.

This first ability check suffers from a mechanic so baroque that it reads like a gag.

To determine an action’s success, perform these actions:

  1. Roll d100, add the ability score, and then use this result to determine which die to roll in step 2. On a result of 1-20 roll a d4; on 21-40 roll d6; on 41-60 roll d8; 61-80: d10; 81-100: d12. To cope with results higher than 100, create a house rule for this house rule.
  2. Roll the die determined in step 1 and multiply the number by the attribute. This result becomes the chance of success.
  3. Roll a d100. If the result is less than or equal to the probability from step 2, you succeed!

The method requires three rolls, multiplication of double-digit numbers, and a table. But if that seems too simple, the article offers optional rules accounting for character level and class. All this yields an outcome barely more realistic than a coin flip.

To settle on an ability-check mechanic that required so much fuss, the author must have seen checks as a rare undertaking.

Despite the tortured mechanic, the idea of ability check marks a major innovation. None of the few role-playing games available in 1976 featured anything like the concept. In a few years, every RPG would build on the idea.

In the Advanced Dungeons & Dragons Player’s Handbook (1978), Gary invented a playable ability check for the Dig spell. “Any creature at the edge (1’) of such a pit uses its dexterity score as a saving throw to avoid falling into the hole, with a score equal to or less than the dexterity meaning that a fall was avoided.”

By the late 70s, the method found in the Dig spell turned into common house rule: To make an ability check, players tried to roll under an attribute on a d20.

The 1980 D&D basic rules by Tom Moldvay made this house rule official. “The DM may want to base a character’s chance of doing something on his or her ability scores (Strength, Dexterity, and so forth). To perform a difficult task (such as climbing a rope or thinking of a forgotten clue), the player should roll the ability score or less on 1d20. The DM may give a bonus or penalty to the roll depending on the difficulty of the action.”

Meanwhile, other role playing games advanced the state of the art. Traveller (1977) introduced skills and a single mechanic for skill checks. Runequest (1978) boasted skills and “attribute rolls” that multiplied an ability by 5 to set a percentage chance of success.

In games with skills, the skills cover most tasks a player might attempt, so ability checks blur into skill checks. Fifth edition intentionally makes skills an addition to ability checks.

For AD&D, Gygax showed little interest in ability checks. Improvised rulings worked fine for him. (When the DM is E. Gary Gygax, no player quibbles with a ruling.)

As for skills, Gygax preferred to keep D&D’s class archetypes pure. His Unearthed Arcana (1985) added weapon proficiencies as a sort of weapon skill, but the narrow scope kept the sharp lines between classes. Oriental Adventures (1985) extended the concept to create non-weapon proficiencies—skills without the name. These new proficiencies never overlapped with class abilities.

After Gary left TSR in 1985, his successors on the AD&D team lacked the clout to make sweeping changes to the company’s flagship game. Nonetheless, their additions inched AD&D closer to matching the ability checks and skills in other role-playing games.

Ability checks finally reached AD&D in the Dungeoneer’s Survival Guide (1986). Although this book’s title suggests a focus on player strategy, this guide brought key rules innovations to AD&D. Here, the non-weapon proficiencies from Oriental Adventures became options in the primary game. When players used non-weapon proficiencies, they made proficiency checks to determine the outcome. These checks operated like ability checks, but proficiency improved the chance of success.

The new system of featured all the ingredients of a modern skill system, but suffered a few drawbacks:

  • Class abilities already covered most of a character’s actions, so non-weapon proficiencies rarely came up in play.
  • The phrase “non-weapon proficiency” proved unwieldy. The term evolved from Gary’s own work on D&D, but it forced a lot of extra syllables on players just to avoid contaminating D&D with anything called skills.
  • Roll-under ability checks confused players and designers.

For D&D’s other d20 rolls, players aimed high, but for ability checks they aimed low. This simple difference fostered confusion. The original ability-check rule said, “The DM may give a bonus or penalty to the roll depending on the difficulty of the action.” That meant a bonus subtracted from the roll—an ugly break from intuition.

A cleaner method adds the bonus to the attribute, so players roll under a higher number.

By now, some Internet critics might scoff at my notion that adding roll-under checks to D&D confused people. I imagine an argument heaping contempt on idiots who clearly lack the intellectual capacity for RPGs. Go back to Candyland. Who would let roll-under checks trip them up?

The D&D team at TSR.

Sometime during playtesting, the Dungeoneer’s Survival Guide apparently switched its method of applying modifiers, but the book reached print with an incomplete change. The “Sage Advice” column in Dragon issue 118 tried to sort out the mess. “OK, OK, OK, already! You’re right—there is something wrong with the DSG non-weapon proficiency system.

“We went through the manuscript and thought we had caught all the places where the text needed to be changed. We missed a couple of simple ones, and this caused a tremendous problem in the system.”

TSR management insisted that second edition AD&D remain broadly compatible with the original. The Player’s Handbook (1989) included a corrected version of non-weapon proficiencies as an optional rule. Ability checks entered the core game, but languished in the glossary.

For D&D’s third edition in 2000, the designers finally gained leeway to correct old drawbacks. Ability checks flipped so players aimed for high rolls. Skills embraced the actions characters actually did in the game. And no one had to say or type “non-weapon proficiency” ever again (unless they tell this story).

A Lack of Ability Checks Shaped How People Originally Played Dungeons & Dragons

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Dungeons & Dragons includes three types of d20 rolls: saving throws, attack rolls, and ability checks. Saves and attacks come from the original game, but ability checks first got a name 12 years later. Ability checks began as an obscure rule where players tried to roll low on a d20. In second edition, the rule for ability checks only appears as one paragraph in the glossary. Today’s style of check finally arrived in 2000.

Modern D&D players make ability checks throughout the game, so a D&D game without checks seems stunted. But before ability checks, D&D players found a style that mostly avoided a need for such rolls.

In A Quick Primer for Old School Gaming, Matthew J. Finch describes this original style. “The players can describe any action, without needing to look at a character sheet to see if they ‘can’ do it. The referee, in turn, uses common sense to decide what happens.

“You don’t have a ‘spot’ check to let you notice hidden traps and levers, you don’t have a ‘bluff’ check to let you automatically fool a suspicious city guardsman, and you don’t have a ‘sense motive’ check to tell you when someone’s lying to your character. You have to tell the referee where you’re looking for traps and what buttons you’re pushing. You have to tell the referee whatever tall tale you’re trying to get the city guardsman to believe. You have to decide for yourself if someone’s lying to your character or telling the truth.”

To players who still favor D&D’s early versions, the lack of ability checks counts as a feature. Faced with an challenge, players must observe and interact with the game world. Instead of scanning their character sheet for solutions, players rely on their wits and ingenuity. Without checks, the game tests player skill more than character stats.

The absence of checks encouraged dungeon masters to assume that characters brought enough competence to succeed at ordinary tasks. For example, if characters wanted to bind a prisoner, they tied him up. But in third edition, characters relied on Use Rope skill, which often painted heroes as ridiculously inept at knots. I once played a convention game where a DM stretched Use Rope failures into hours of tiresome gaming. DMs can always skip a check for a simple task, but the presence of a skill tended to encourage checks.

Early characters could tie knots and they found pits by tapping on the floor with a 10-foot pole, but they still attempted actions that defied common-sense resolutions.

In the original game, common tests of an ability each brought a separate rule. To see if characters perceived a secret door, the dungeon master rolled a d6. Typical feats of strength relied on two different mechanics: Bending bars and lifting gates required a percentage roll, but bashing doors required a d6 roll.

If a situation came less frequently, the game offered no rules. So how could a dungeon master decide whether a character crossed a tight rope?

In the Advanced Dungeons & Dragons Dungeon Master’s Guide, Gary Gygax describes his approach. “Allow the dice to control the situation. This can be done by assigning reasonable probability to an event and then letting the player dice to see if he or he can make that percentage.” Gygax made up rulings on the spot to suit whatever seemed “correct and logical.”

This approach led to the jumble of the original D&D rules. Faced with a game situation, Gygax tended to invent a roll that settled the outcome. If the situation came up enough, the method become a rule.

Many dungeon masters felt uncomfortable embracing Gary’s improvisation. D&D players frequently try things that test a characters’ ability scores, and DMs wanted a fair and easy way to decide the outcome. Their players wanted consistency too. Rules become the laws of physics in the game world. If a rule exists for an action, players understand how it’s resolved and their chance of success. Players enjoy that transparency.

The first ability check mechanic reached print in 1976, but ability checks would take decades to become a foundation of D&D.

Next: Ability checks—from the worst design in role-playing game history to a foundation of D&D.