The survey ship U.S.S. Sus has just a few more tweaks, checks, and tests to undergo before it can begin its mission in deep space. However, not everyone wants to see the ship succeed at exploring far planets. Intruders have boarded the ship and are disguised as part of the astronaut crew. Can the astronauts find the intruders and expel them from the ship before it is too late?
U.S.S. Sus is a hidden role game where 5-11 players take on the roles of the astronauts or intruders and then try to figure out who they can trust and who is suspicious.
The game is played in rounds and each round has three phases. In the first phase all players secretly choose a location in the ship to work in. In the second phase players will find out who else is working in the same room, and then the intruder players can attempt to kill a player in the same or adjacent room. In the final phase the players discuss who is an intruder and decide if someone is going out an airlock.
—description from the designer