Scenario breaker

scenario breaker, n. 1. in RPGs, a power gamer who intentionally spoils the GM's scenario by taking actions that, while legal in the game system, violate the story structure of the scenario. see player revolt.
Ex: Rick avoided the entire ten-level maze by locating the exit and going in backwards -- that's when Rudy called him a scenario breaker, and threw his diet coke at him. [GJ1]