During Christmas Eve, while Santa is delivering presents, Aliens attempt to invade earth, but Santa is gonna' have none of it. You must control Santa and defeat the aliens as they attempt an all-out invasion of earth. "Z" shoots and "X" jumps. The arrow keys are to move Santa around. He's not a very fast moving guy, but how can he be with that plump belly of his? Jump, shoot, and waddle your way through this action packed alien invasion action game.