Traps

Ancient alien ruins and corporate offices alike are rife with traps and defense mechanisms meant to protect valuable goods, personnel, and information. Additionally, adventuring characters sometimes encounter situations that, while not intentionally set up as traps, are just as dangerous—an unshielded power conduit in a damaged ship could prove deadly to those who aren’t careful, as could an unbalanced grav plate that might fling the unwary into a wall at high speeds. Whether the presentation of such dangers is intentional, accidental, or simply situational, all are represented using the same set of rules.

Detecting a Trap

A character can search for traps using the search task of the Perception skill. Compare the searching character’s Perception check result to the trap’s Perception DC. On a success, the character detects the trap.

Triggering a Trap

All traps have a defined trigger. If the characters fail to locate a trap while exploring an area, the trap might be triggered by a standard part of traveling, such as stepping on a floor plate or moving through a magical sensor. Some traps instead have touch triggers. These traps trigger only when a character deliberately takes an action that directly manipulates the environment—by opening a door or pulling a chain, for example.

Disabling a Trap

Characters can attempt to disable analog and technological traps with the Engineering skill, magical traps with the Mysticism skill, and most hybrid traps with either skill. Some traps require other skills to deactivate—for example, if a trap is controlled by a computer system’s control module, characters must use the Computers skill to hack the control module to prevent the computer from triggering the trap. For some traps, more than one skill can be used to disable them; often, these skill checks have different DCs and different results (which may not entirely disable the trap). Other traps require multiple skill checks to completely deactivate. The skills required to disable a trap (and the method of deactivation) are listed in the trap’s stat block.

A character must first detect a trap in order to attempt to disable it, since only through observing particular details about the trap can the character know the proper countermeasures. Even if a trap has already been triggered, characters can still attempt to deactivate the trap. Some traps no longer pose a danger once they’ve been triggered, but the PCs might be able to stop the trap’s ongoing effects, if any. Other traps might not have ongoing effects, but reset over a period of time; characters can still attempt to disable the trap during this time.

Gaining Experience

Characters gain experience points (XP) for overcoming a trap, whether they disable it, detect and then avoid it, or simply endure its effects. The XP for a trap is equal to the XP for a monster of the same CR (see Table: Experience Point Awards).

Elements of a Trap

Traps are presented in stat blocks with the following information; entries marked “optional” appear only if relevant.

Designing a Trap

To design a new trap, decide what CR you want the trap to have and consult Table: Trap Statistics for guidance on the various statistics of a trap at that CR. These are only guidelines, however. Feel free to adjust a trap’s statistics, though you should avoid changing these numbers to values corresponding to a CR more than 2 higher or lower than the trap’s CR.

Table: Trap Statistics
CRPerception DCDisable DCInitiativeEAC/KACGood SavePoor SaveHPAttackDamageSave DC
1/21712+49/13+3+012+92d611
12116+610/14+4+119+113d612
22318+712/16+5+225+124d613
32419+813/17+6+338+136d614
42621+915/19+7+450+144d10+215
52722+1016/20+8+569+154d12+415
62924+1117/21+9+688+176d1216
73025+1218/22+10+7107+198d1017
83227+1419/23+11+8125+208d1218
93328+1521/25+12+9144+2210d10+518
103530+1622/26+13+10163+2310d1219
113631+1723/27+14+11181+2412d1220
123833+1925/29+15+12200+2712d12+521
133934+2026/30+16+13225+2814d1221
144136+2127/31+17+14250+2914d12+722
154237+2228/32+18+15275+3014d12+1523
164439+2329/33+19+16300+3116d12+1524
174540+2430/34+20+17338+3216d12+3024
184742+2631/35+21+18375+3316d12+4525
194843+2732/36+22+19413+3416d12+6026
205045+2834/38+23+20463+3516d12+7527
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