Gnosia is a science fiction take on the Werewolf party game. The spaceship is being overrun with aliens known as Gnosia who can take the form of humans; players must speak to everyone on board to try to determine who's a human and who's actually Gnosia. Players can force any character into cryostasis one by one, with the goal of trying to neutralize the Gnosia while leaving humans standing. Players win if they suspend all the Gnosia, but lose if they accidentally suspend humans and leave Gnosia awake. A round takes about 15 minutes, and NPC roles are randomized each time so that each round is unique.