Work your way through a fictional land by figuring out how to protect it. You control one tank, that starts out protected by rocks. To move it out, use the direction keys to get it out into the open. Then you can go ahead and keep moving it around the area. To shoot at tanks, use the space bar. Their life bars will be over them, so you can see how many more shots you need to destroy them. However, you should also keep an eye on your life bar so it doesn't get too low. Try not to get stuck between two tanks. You can't kill two faster than they can kill you.