Death Tank is a 2D multiplayer versus shooter, set on a hilly terrain. Although similar to Scorched Earth, Worms, or Gunbound the gameplay is real time instead of turn-based. It supports up to 7 differently-colored tanks with a range of weapons to battle it out. The terrain on which this occurs, an ever-decreasing yellow landscape, is completely obliterated by the players during gameplay or otherwise gradually whittles down to a flat plain.
Dreisbach, working with Snowblind Studios, developed a standalone version of the game for Xbox Live Arcade. It was released on Wednesday, February 18, 2009.
A version of Death Tank Zwei is included as an extra in this release, which can be unlocked by shooting down a supply plane in the main game. There are a number of minor differences between this new version and the original; it lacks the title screen (and Death Tank theme), options and player selection screens. The game has an upper limit of four players (instead of the original seven), and there are a number of changes to the names of the weapons.
Source: Wikipedia, "Death tank", available under the CC-BY-SA License.