One player is playing the alien, all other players are one member of an expedition team in a station at the Antarctica. A storm rages and makes it impossible for the team to leave the station. Suddenly they find the radio broken…

The players try to repair the radio, to call for military help, to kill the alien. The needed parts are scattered over the rooms of the station. The alien player will try to stop the team from repairing the radio.

The generator of the station is a dynamic time counter. It will shut down after 6 rounds, leaving the humans to freeze to death. This is the victory condition of the alien player. To avoid this, the human players need to fuel the generator with gas, which they can find in specific rooms of the station.

During play, the alien player can move much more freely than the humans and will turn the station more and more to a hostile area, where he will have the advantage when meeting the players.