Japanese players can download a basic pack of the action game for free, which supports multiplayer and allows them to select the city map for Free for All, Team Battle and Giant Monster modes.
Players who download the free version of Tank! Tank! Tank! can only play it three times daily; however, this restriction is removed if players purchase any downloadable content for the game.
To unlock more parts to the upgradable demo, players must, of course, purchase the offered downloadable content on the game.