

@jjjalljs I read a fun story years ago about some PCs out hunting for bandits in the woods. They come across some rough looking NPC fellows camping, thumbing their axes and looking suspicious. The players are like “hey, have you seen bandits around?” to which the NPCs reply “…uh, yeah, why don’t we show you where they are?” Then the whole party was shocked when the (OBVIOUSLY bandit) NPCs pushed them off a cliff.
They argued that if the NPCs had been bandits they would just attack on sight.

Hm, that is tricky. You presumably want something that moves very fast, so something were either the options are very limited, or most things are resolved the same way (no rules lookups).
Did you have a genre in mind?