Tag Archives: Pathfinder

Is it noticed? How to run alertness

Introducing the spot check

In this post, I cite “spot checks” to refer to third edition’s Spot checks, Next’s Wisdom (Perception) checks, and tests of awareness made with 4E and Pathfinder’s Perception skill.

The Spot skill and its descendents rate a character’s ability to notice something while doing other things like traveling, fighting, or resting. Before Spot entered the game, unless you searched, you noticed the things the game master decided you noticed. A thief might hide from you, but their success depended on their roll to hide, not on your ability to spot.

Spot the spider

Can you see me?

When the game master simply decides what the characters perceive, the game plays fine. After all, the game master adds things to an adventure to enrich the adventure. If you let the dice say that the PCs fail to catch a scent of brimstone, or fail to spot the cloud of bats erupting from the cliffside, then the game suffers.

Nonetheless, when Spot skill entered the game, game masters and designers dutifully worked spot checks into every situation. Whenever the party opened a door or topped a hill, everyone made a new round of spot checks. At some game tables, every bit of information had to be earned with a spot check.

I will explain why you should skip many spot rolls, reserving the spot check for a small number of specific circumstances.

Passive perception and taking 10

Fourth edition attempted to rein in spot rolls by introducing passive perception. In principle, a dungeon master could skip perception rolls and use the characters’ passive perception to determine just what they notice as they explore.

“Passive perception checks help you set the scene. They tell you right away how much of the details of a room or encounter area the characters notice.” – Fourth edition Dungeon Master’s Guide p.26

Passive perception extends the mechanic of taking-10. Instead of players stating that they take 10, the game master assumes it.

Passive perception avoids putting the players on alert by asking for a roll when they see nothing. And it avoids interrupting the narrative for all those rolls.

What’s not to like?

The problem with passive perception

Passive perception forces the dungeon master to do the extra work of tracking all the passive perception scores and of setting perception DCs. Typically, this extra effort only yields a process that amounts to the DM deciding in advance what the PCs will notice. Seem familiar?

Most DMs running for regular groups know the approximate perception bonuses of the PCs. If you bother to create something interesting or something that advances the adventure, would you hide it behind a DC that prevents the group from ever seeing it? Never. Not even authors of published adventures will hide things that enrich the adventure beyond the perception of a typical party.

Secrets add fun to the game, but only when uncovered. If the players overlook the secret door, it’s just another wall. – Monte Cook, “Dungeoncraft” in Dungeon 137

But suppose a virtuous DM devises an adventure that gives keen-eyed parties a significantly different experience than unwary parties. The players still never know that their keen-senses paid off. The work of managing perception stays in the DM’s head, its effects unnoticed by the players, extra work, arguably for nothing.

If you would set the DC required to spot something within the reach of the PCs’ passive perception or take-10 value, then skip the DC. They spot it. The players will not ask you to show your work.

As a diceless method of resolving spot checks, passive perception falls short, but it still works as a way to set a difficulty class. More on that later.

The play value of rolling to spot

None of this means that you must always decide in advance what the players see. Random rolls can add an element to the game.

  • Unpredictability makes role-playing games interesting, mainly for the game master. The printed adventure cannot surprise the GM. Only the players actions and the random luck of the die add surprises to the game.
  • Randomness helps the game master keep some distance from the characters’ fates. The players should see the course of the game determined by their choices and by the luck of the die, not by the GM’s whims and mood.

Ask for spot checks (a) when success is uncertain, and (b) success hinges on keen senses in the game world.

Group perception checks almost always succeed

The outcome of group perception checks is rarely uncertain enough to merit a check.

Anytime every player can attempt a spot check, someone will succeed. Suppose a party of five adventurers, all with +0 to their check, passes something that requires a spot DC of 15, what D&D Next considers a moderate DC. If one person rolls, the chance of success is 30%. If everyone rolls, each has a 30% chance of success, which means the odds of someone succeeding grows to 83%. This supposes that no one is particularly good at spotting—everyone has a +0. One alert character pushes the chance of success closer to 90%.

When the odds of everyone missing something amounts to a rare fumble, does stopping the action to roll make sense? With some groups, absolutely. In particular, younger players love to roll, so group rolls create excitement despite the minimal chance of failure. Let them roll.

“Listen or Spot checks can get repetitive and dull if players have to make them over and over, especially when it usually only takes one success out of the whole group to succeed, making their success typically a foregone conclusion. Think twice before asking for such checks. They’re interesting when the PCs are trying to find a hiding or invisible foe, but get dull fast when they’re walking through the woods and you ask for them for every hour of travel.” – Monte Cook, “Dungeoncraft” in Dungeon 137

For most groups, you can consider any ordinary group perception check an automatic success. Skip the pointless activity, tell them what they see, and move on.

When you devise adventures, never mistake a group perception task difficulty for a challenge. On the rare occasions a group fails to spot something, they fumbled. This certainty is not a bad thing. In most cases you want the players to spot the “hidden” things in your adventure, either because these interesting things enrich the adventure, or because they advance the plot.

Hard checks change the equation. These checks impose DCs so high that only one or two members of the party can even hope to succeed. That’s the water elemental stirring the reeds under the bridge, or the key glimmering below the school of silvery fish. In these cases, allow a roll. You must be comfortable with the likelihood that no one will spot the ambush or the key.

If your players have become accustomed to calling for group perception checks, you can tell them not to waste their time, or you can let them have their fun, knowing that their success is virtually certain.

Individual perception checks may merit a roll

Of course, many spot checks can only be attempted by a character or two. This gives you a chance to add an element of uncertainty, and gives your players a potential reward for investing in perception.

Sometimes a spot task may be limited to the characters…

  • leading the party in marching order.
  • with darkvision or another requisite ability
  • spending an action the heat of battle to look
  • with applicable talents such as the ability to spot traps or arcane phenomena
  • taking the role of lookout

The D&D Next exploration system turns some of these limitations into specific rules: “When a character chooses to keep watch as an exploration task, the character makes a Wisdom (Perception) check to detect hidden creatures and an Intelligence (Search) check to detect hidden objects (such as traps and secret doors) as the group travels during the current exploration turn.”

D&D Next writes this as a rule, but it applies to other games too. In many situations, only a few members of the party can make perception checks. Their skills pay here. Keeping watch is a task akin to mapping or tracking.

“Don’t be afraid, in some cases, to only allow one or two characters to make the check. It’s with in your prerogative to rule that most of the party is preoccupied in other activities while one character is more or less ‘keeping watch.’ This isn’t covered in the rules, but in a case-by-case basis, you can decide that only a character who’s trying to listen or keep an eye out has a chance of making a check.” – Monte Cook, “Dungeoncraft” in Dungeon 137

Group perception checks guarantee success, so individual checks like these represent a chance for players who invested in perception skills to reap benefits.

Even if only one or two characters can possibly notice something, you might ask all the players to make the roll, and then only consider the checks from those able to notice. This avoids giving clues about, say, the location of the breeze coming from the unseen exit.

Favor search over spot

Before you ask for a spot check, consider whether a search makes more sense. In most cases, this comes down to the circumstances, see “Choosing which type of perception check fits a situation.” Sometimes, you may be tempted to give someone a chance to spot something hidden, but hypothetically visible to spot. Favor making the players search. Searching plays better than spotting for a couple of reasons:

  • Searching engages the characters in action, forcing them closer for a look.
  • Searching invites the players to make decisions about when, where, and how to search, and how much time to risk.

If someone steps into a room, aces a die roll, and sees the key at the bottom of the fountain and the odd scratches on the floor behind the chest, you have replaced the interaction and decision making demanded by a search with an abstract roll.

Hiding and sneaking

When one creature attempts to hide from others, do not ask for spot or listen checks. Instead, use passive perception or take-10 scores to set the DC to sneak or hide. Pit the active creature’s stealth check versus the highest applicable take-10 score. In the case when a group could roll to spot, this method makes hiding possible, because group perception checks virtually always succeed.

In combat, if someone chooses to look for a hiding creature, they can spend an action and roll versus the hiding creature’s check. In Pathfinder and 3E, active looking takes a move action. In 4E, active looking takes a standard action.

The same system works for ambushes. If someone hides to ambush, they roll to hide. Later, when the ambush springs, compare the hide check against the highest passive perception or take-10 score of the targets.

While this procedure may not follow your game’s written rules, it makes sense because the targets of the ambush are busy traveling and, by default, taking 10 on perception.

Five questions to ask before calling for a Spot check

The game master almost always asks players to make spot checks, except when players take an action in combat to look for something.

As a game master, before you ask for a check, consider these five questions:

  1. Is something sneaking or hiding? Skip the spot check. Instead, use the party’s best take-10 (passive perception) scores to set the DC for the hide or sneak attempt.
  2. Can the thing to spot be noticed from the character’s vantage? If not, wait for the players to search.
  3. Does noticing something fall within the take-10 value of the most perceptive PC? Do not roll. Something is noticed.
  4. Does everyone in the party have a chance to notice something? Do not roll. Something is noticed.
  5. Are only one or two characters in position to notice something? Ask for a perception check.

Next: How to run an ambush

Choosing which type of perception check fits a situation

Both fourth edition Dungeons & Dragons and Pathfinder apply a single Perception skill to all observation tasks. This cuts any confusion about which skill applies. Both D&D Next and third edition split the single skill into two or three.

3E D&D check 4E & Pathfinder check D&D Next check
Search Perception Intelligence (Search)
Spot Perception Wisdom (Perception)
Listen Perception Wisdom (Perception)

Magnification specs

For more on the advantages of multiple observation skills, see “A short history of perception in Dungeons & Dragons.”

In this guide, I sometimes refer to the perception tasks as Search, Spot, and Listen. In your game, apply the skill or check that fits the task.

Choosing which type of check fits a situation

D&D Next offers two types of observation checks, Intelligence (Search) and Wisdom (Perception), raising questions about which applies to a situation.

Spot and alertness checks

Wisdom (Perception) could have almost been called Alertness as these checks cover general awareness. When choosing whether to make these checks, consider the following observations:

  • Characters usually make Wisdom (Perception) or Spot checks to notice something while they’re busy doing something else: traveling, fighting, and so on.
  • Characters usually make Wisdom (Perception) or Spot checks because the game master calls for the check. The characters are busy, but the game master wants to determine if they notice something unusual. Characters make Wisdom (Perception) rolls when they look but don’t touch.
  • Wisdom (Perception) and Spot match with Tarzan’s alertness.
  • Wisdom (Perception) checks show keen senses too, but this typically only applies in one situation: Characters listening at a door make Wisdom (Perception) checks.

Search checks

Intelligence (Search) checks apply when characters spend time to examine and investigate.

Characters make Intelligence (Search) checks when players call for the check by asking to search.

Intelligence (Search) matches with Sherlock Holmes’ use of intellect of observe.

If you spend a moment to scan the surrounding trees, or press your ear to a door to hear what might lurk beyond, you’re relying on Wisdom (Perception) rather than Intelligence (Search). As a rule, if you’re not positive that Intelligence is the right choice, then Wisdom is the ability to use.” – D&D Next playtest rules

Listen checks

Third edition included a Listen skill as a nod D&D’s long tradition of characters putting their ears to doors. Aside for listening at doors, Listen skill frequently overlaps with Spot. When characters might both see and hear something like the monsters sneaking close to ambush, just roll to spot. Allowing characters to use both Listen and Spot to notice one thing makes stealth too difficult and adds excessive die rolling. Reserve Listen for cases where nothing can possibly be seen.

Next: Secrecy, metagaming, and perception checks

A short history of perception in Dungeons & Dragons

Through second edition, Dungeons & Dragons handled perception with a mix of mechanics: To find hidden objects, players said where they wanted to look, and the dungeon master said if something was there. To find secret doors, the DM rolled a d6, and then considered the character’s elven parentage. Listening also hinges on a d6, with everyone but humans gaining an advantage. To spot an ambush, the DM resorted to the surprise system, which by AD&D, no one understood.

Runequest second edition

Runequest second edition

Third edition D&D would replace this mess with a system taken from Runequest (1978). Except from prior editions of D&D, Runequest serves as the dominant influence on third edition. RQ based perception on three skills: Listen, Spot Hidden Item, and Spot Trap, which became Listen, Scan, and Search in the game’s 1985 edition. A character’s intelligence boosted these skills.

When the 3E designers adopted Runequest’s perception skills as Listen, Spot, and Search, they had to decide which ability scores would match the skills. Runequest used Intelligence, and for Search, that fit. But how did intelligence help you listen? Does intelligence make you more alert?

Wisdom makes you alert

Unlike Runequest, D&D possessed a Wisdom score. Although Wisdom improved some saves, virtually no skills relied on it. The 3E designers saw a chance of broaden Wisdom’s portfolio of traits to include an awareness of more than the spiritual, but also of the hushed voices in the next room and the flash of steel through a window. While this interpretation strained the dictionary definition of Wisdom, it improved the game by making the value of Wisdom match the other ability scores.

Like RQ, third edition continued to base Search on Intelligence, but Listen and Spot stemmed from Wisdom.

Both D&D’s fourth edition and Pathfinder’s designers dispensed with the distinction. In both games, Search, Spot, and Listen all become a single Perception skill based on Wisdom. While I understand the urge to simply, Spot and Search get used frequently enough to merit separate skills. Search isn’t Use Rope.

The advantages of Search and Spot

D&D Next undoes some of the simplification by splitting Perception into two skills: Search, based on Intelligence, and Perception, based on Wisdom. The D&D Next Perception combines Listen and Spot. The rules make the analogy of comparing Search to Sherlock Holmes’ use of intellect to observe clues, and comparing Next’s Perception to Tarzan’s alertness.

I think the Next designers erred by calling the combination of Listen and Spot “Perception.” The skill shares a name with 4E and Pathfinder’s Perception, but it covers fewer tasks. It should have been called Awareness or something. To further compound the confusion, the section of the playtest document covering Perception and Search is titled “Perception.” When the final rules appear, I will rate the editors’ performance on whether this stands.

Having separate Perception (Awareness) and Search skills offers two advantages:

  • Both Wisdom and Intelligence gain value as they boost the most frequent, non-combat checks in the game. Without a Search skill, Intelligence only contributes to knowledge checks, which someone in the party will probably make anyway.

  • The two skills more closely simulate the real world of brilliant but inattentive professors and of alert creatures with animal intelligence. Some dogs notice the smallest disturbance, but can’t find the kibble making a lump under the rug, even though they smell it somewhere.

On the other hand, Listen remains part of Perception (Awareness), an improvement on 3E. When Listen and Spot exist as separate skills, they can apply to the same situation, leading to confusion. For example, when you might both see someone creeping in the shadows and hear them, do you make a Listen check, a Spot check, or both?

By settling on Search and Perception, D&D Next finds the optimal set of perception skills, if not optimal names.

Gen Con 2013 recap and the D&D Championship visits the Lost City

I’m back from Gen Con and four days of terrific gaming.

For this year, Wizards of the Coast elected to focus its attention on exposing as many as possible to Dungeons & Dragons Next, and so they dropped all Living Forgotten Realms events from the convention. Pushing D&D Next seemed to work. Players new to D&D Next filled my tables and I met a lot of Pathfinder devotees willing to sample the new D&D system.

The lack of LFR disappointed some players and judges, but I appreciated the chance to run D&D Next for the first time. The absence of LFR at this convention doesn’t signal the end of fourth edition or of Living Forgotten Realms. New LFR adventures are coming. The Winter Fantasy convention will feature a slate of LFR events, including a new, paragon-level battle interactive.

2013 D&D Championship - battling Zargon in the lost city

2013 D&D Championship – battling Zargon in the lost city

Although I dungeon mastered the Crisis in Candlekeep delve twice, my DM highlights came from running the Murder in Baldur’s Gate launch adventure three times. Murder in Baldur’s Gate forced me to develop an aspect of my DM skills that I’ve rarely exercised in the past. I’ll write about that in an upcoming post.

As usual, playing the 2013 Dungeons & Dragons Championship delivered as much fun as I ever have playing D&D. The Championship features a lethal adventure intended to test even the best teams of players. The unforgiving challenge brings a sense of peril that you never see in typical adventures, because in typical adventures the odds always favor the players. The event’s time pressure amps up the urgency and demands fast play.

The Lost City (1982) by Tom Moldvay

The Lost City (1982) by Tom Moldvay

This year the author of the championship adventure, M. Sean Molley, created a tribute to the 1982 Lost City adventure by Tom Moldvay. The first round dared teams to recover three staffs from locations in the lost city. Earlier fourth edition championships played solely as tactical miniature battles, but this year’s adventure added puzzles to the mix—a welcome nod to the old tournament classics. The final round required characters to use the staffs in a fight to destroy past and present versions of Zargon, the evil demigod of the lost city. I marvel at how skillfully a battle with so many variables was balanced on the narrow line between difficult and impossible.

As a dungeon master, I admire the DMs in the championship, who must play fast, fair, and show total command of the rules. They do enjoy some perks: Where else can a DM coupe de grace a fallen character without straining D&D’s social contract? Even among this elite crew, our DMs Brian and Sean stood out as exceptional. Plus, our DM for the finals happened to be the adventure’s author.

I played on the team that claimed second place—for the third year in a row. We’re like the 1990-1993 Buffalo Bills of the D&D Championship. Still, I’m thrilled to do well.

Will next year’s Championship be the first to feature the next iteration of the D&D rules?

Scry and fry

(Part 2 of a series, which begins with Spells that can ruin adventures.)

Third edition Dungeons & Dragons added the Scrying spell, which unlike Clairvoyance and Clairaudience could target a creature rather than just a familiar location. Scrying worked in conjunction with Teleport to make villains vulnerable to the scry-buff-teleport system of ambush, also known as scry and fry.

The target of the Scrying spell gets a save, but the wizard can always wait for another attempt, or just scry Igor or minion #3. The game offers a couple of eighth-level, defensive spells in Screen and Mind Blank. Will the Dark Lord mind blank Igor too? None of these spells can be made permanent, so apparently, every high-level villain needs archmages on staff just to thwart do-gooder knuckleheads who can cast a sixth-level spell. In practice, the best defense might be a DM with the chutzpah to fudge an improbable number of saves. The Pathfinder system makes the spell easy to counter with lead shielding. Why didn’t Gary Gygax think of that? He did. In the first edition, metal sheeting blocked Clairvoyance and Clairaudience.

The teleport ambush worked so well, and the game offered so few countermeasures that Monte Cook stepped up in 2001 and included spells like Teleport Block, Teleport Tracer, and Teleport Redirect in his Book of Eldritch Might. In 2005, the Spell Compendium finally added practical countermeasures to the base game with Anticipate Teleportation and Greater Anticipate Teleportation. These spells delay the arrival of teleporting creatures into an area long enough to foil an ambush.

Anticipate Teleportation serves as an excellent example of a countermeasure that allows problematic spells to continue working, while adding interesting complications that makes using them risky. If Anticipate Teleportation can be made permanent, then it adds a perfect solution to the game. Teleport Redirect, on the other hand, counters Teleport with an easily lethal trap. As a DM, I want to avoid killing an entire party due to an unwise teleport.

Players don’t like having the DM nullify the cool things they can do, even if it’s cloaked in the guise of the villain’s wards and traps. If your villain happens to use some of the gotcha effects, you’re really going to see some angry glares across the table. “So you’re saying that after you heard us talking about teleporting, the bad guy just ‘happened’ to have Teleport Redirect in place.”

Players hate when you use your DM’s knowledge of their plans to invalidate their cleverness or cool toys. (And unless you can point to the gotcha, spelled out in advance, in ink, players will always suspect this.)

The ideal defenses to game-ruining spells make the spells riskier to use without invalidating them, like Anticipate Teleport. The counter effects cannot be so devastating that players feel punished for daring to use their hard-earned magic against the DM’s pet villains. And some countermeasures, like metal sheeting, need to be within reach of canny villains who cannot afford to keep archmages on retainer.

Next: Designing for spells that spoil adventures