GM resource
Encounters for Call of Cthulhu 7th Edition
Building scenes that challenge without stalling. Call of Cthulhu 7e encounters work when there's a real decision inside them, not just a roll to resolve: Call of Cthulhu uses percentile skills: roll d100 and succeed if you roll at or under your skill. Difficulty often shifts the threshold (Regular/Hard/Extreme) and Sanity loss is a core pressure loop.
Checklist
- Give the encounter a win condition beyond 'reduce the enemy to zero.'
- Vary what the opposition is trying to do, not just how tough it is.
- Use the dice to create swings, not a predictable grind.
- State what changes in the world if the players lose this encounter.
Common pitfalls
- Encounters with only one way to win
- No stakes if the fight goes badly
- Reusing the same enemy shape every session