Controls are given before the game starts. The goal of the game is to defend your side of the screen from invaders. After 10 or more pass you, you die. Also, if an invader hits you, you might lose health, but they will die also.
The music used for this game is 'The Call Of Ktulu' by Metallica. Don't sue me Lars! Warning: Most of the sound effects have a significant level of bass, so if that bothers you, then you might not want to play.