The controls are as specified for each character at the bottom of the screen. The up-most control is fire a rocket that can kill players on a direct hit and destroy sections of line (once per round) and the lowest control is the stealth jump, your character teleports forwards a bit (once per round.)
Special powers: Red's bullet bounces off surfaces but doesn't do anything to enemy trails Green has a larger trail but it can't destroy trails Blue's missile leaves a mass of blue trail behind when exploded Yellow's missile is big and leaves a bigger trail of destruction