This homebrew game is based on the old Atari tank shoot-em-up game Combat. Remade for the Wii by developer spiffen, v0.1 was developed using devkitPro tools, as well as GRRLIB for rendering, sndlib for music and sound, as well as support for the use of Wiimote.
There are four ways to enjoy this version, with three matches under the 2-4 Player versus mode, while there's one for the 2 on 2 Team play.
For the 2-4 Player versus mode, you have the Deathmatch, Panic and Run for it! modes, where all is an Everyone vs Everyone game. As for the 2 on 2, you have the Capture the Flag mode, with each team having two players each.
For more information on the gameplay details, just follow the source link below. Meanwhile, do check out the video below so you'll have a better idea of how the game is played.
Download: CombatWii v0.1