A spaceship is travelling in limitless space, and its crew is trying to survive. There’s an impostor amongst them and they need to carry on guard. They wish to take note of empty rooms, and be ready for an assault when left alone with one other particular person, what if that someone is the impostor. The Impostor must kill everyone and might stop at nothing, even when it means sabotaging the ship. He is artful and sneaky. He can disguise in darkish corners and anticipate his sufferer, or hastily bounce out of a air movement shaft and assault from behind. It is troublesome to find out him among the many many crew members, till he makes a mistake. You wouldn’t do that, would you, Impostor?