Your military overlords have developed a new supertank, and they've chosen you to test it. Unfortunately, the "test" involves dropping you behind enemy lines and seeing how far you can make it before you get blown up. Luckily, your overlords are not without compassion, and they're willing to give you health upgrades and better firepower as you rack up kills of your own.
Controls: WASD to move, mouse to aim and fire, spacebar for missiles (when you get them).
Note: For the upgrade menu, just move your cursor to the edge of the screen. Also, be sure to check out the sequel: Supertank 2008