Garry Kitchen's Super Battletank: War in the Gulf Cheats

Fire you machine guns at a target, and as the bullets are hitting the target, pause the game. If the object is red when you pause the game, the bullets will keep hitting the target and destroying it without costing you bullets, or your tank.

Instead of moving at the slow, normal pace, switch the screen to map mode, and drive your tank from there to get around alot faster.