TRAPS

Pre-placed harm waiting for a trigger — spike pits and swinging blades in dungeons, player-laid snares and mines, tripwires, pressure-triggered dart walls, the mimic chest.

• SOLO-DEV COST LOW
• TIMING REAL-TIME / TURN
• COMMON IN ROGUELIKE · SOULSLIKE · TOWER-DEFENSE · STEALTH

The mechanic runs both directions: environment-as-trap (Dark Souls' first mimic and Sen's Fortress teach paranoia as a skill; Spelunky's arrow traps define its whole risk grammar; Grimrock and dungeon crawlers descend from D&D's trapped corridors) and player-as-trapper (hunting games' snares, Rainbow Six's gadget economy, tower defense as trap-laying industrialized, Orcs Must Die as the pure form). Designers place traps because they make space itself hostile and reading it a skill: a trapped corridor converts movement from traversal into examination — the floor's odd tile, the suspicious chest, the too-convenient treasure become a visual language the player learns to parse, and that paranoid literacy is a genre pleasure of its own (the veteran who spots the pressure plate is performing earned knowledge). Traps also punish and reward pace honestly (the rusher eats darts the careful player saw), and as player tools they invert the power dynamic: trapping is intelligence expressed as preparation — the kill you set up three minutes ago is a different satisfaction than the one you aimed, and defensive trap-laying converts map knowledge into materiel. Spelunky's insight elevated the whole form: traps that interact with physics and AI (arrows triggered by anything moving, including enemies) become a systemic layer everyone plays in, enabling trap-jiu-jitsu where the hazard is also your weapon. Key decisions: telegraphing discipline (fair traps are visible to attention — the tell must exist, priced at the game's intended paranoia level; unfair traps teach guide-checking instead of observation), lethality versus lesson (first-trap-kills breed caution or ragequits depending on checkpoint distance), disarm/avoid/exploit counterplay depth (detection skills, jump timing, baiting enemies through), and for player traps: placement expressiveness, trigger logic, and whether enemies learn. Pitfall: traps as memorization tax — the invisible instakill whose only counter is having died to it before isn't a trap, it's a toll booth charging one death per playthrough; the form's entire craft is the discoverable tell, because a trap you could have spotted makes death a lesson, and one you couldn't makes it a designer's confession that they ran out of honest ideas.

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