The game is set on one of four locations; a spaceship, above-earth base, planet base, or a Henry-Stickmin-themed Airship which contains a group of crew members, among which are up to three Impostors who have to Sabotage the ship/base/planet and kill off the Crew.

Crewmates have to complete their chosen tasks, report bodies of other Crewmates who are killed, and initiate emergency meetings if they witness another player doing something incriminating or suspicious.