Originally based on Atari's 1980 arcade game, Battle Zone capture Flag is an online multiplayer (and multiplatform) 3D tank game with chat. Although the game can vary widely from server to server, the basic idea is usually to shoot the tanks of another team's color. Modes such as "free for all," "capture the flag," and "hunt the rabbit" alter the objective of the game, and grab bag style flags help keep things interesting by providing a variety of power ups (good flags) and power downs (bad flags).