Press Space to use the gun to fire bullets at the targets. Each time you destroy ten targets, you advance a level. Each level will give a target more health; it will take more bullets to destroy them. The targets will change color by level. The Score and Level are in the top right, and the High Score, Timer, and Global Time are in the bottom left. Use the arrow keys to move up and down. You will have five minutes to complete the challenge. As soon as you click the green flag the game will start. Good Luck!
The bugs, that have been there for years, have finally been fixed. (plus, an overhaul for the art).