Use the left and right arrow keys to turn. Try not to crash into the line you drew or the green shaking circles. When you make it to 30 seconds, the circles get bigger (their brightness also goes up). Make it past 45 seconds and your square gets bigger. For multiplayer there is a tank. The tank is supposed to help the blue guy, by using WASD and the mouse to shoot the green circles.
For some reason it doesn't move sometimes. Just click the flag again. Also, sometimes you don't die when you touch your line. I worked with masqs_minion My personal record is 66 on single player. Can you beat it?