BASICLY, you got to run around, and shoot cubes. White glowing cubes fall from the sky every 10 sec. If you go into them, you get a new weapon. Orange cubes fall from the sky every 30 seconds, go into them, and you get a bomb (PRESS Q TO USE) Every 45 seconds, a red cube drops from the sky. If you go into it, you get a power up. Every 5 levels there is a SYSTEM ANOMALY (A boss fight!) and you have to sometimes shoot to the beat, and the better you time, the more damage you do. After you beat 25 levels, endless mode starts.