Got this idea from arcade games. Press left to move left and right to move right. Press space to shoot a missile. don't let the computer bugs get to earth or they will hack the most powerful nuclear bomb and explode the earth. (Blame Kim Jong Un) Only you can stop them. The Green moves slowly, the Purple moves medium speed and the Grey moves fast. This was a very simple game. Remix it and make it better please.
I made this up my self. Please comment after you play.