Butt-Ugly Martians: B.K.M. Battles is a Butt-Ugly Martians game for the Game Boy Advance developed by Runecraft Ltd. and published by Vivendi Universal, released in 2002.
B.K.M. Battles is a free-flying shooter, the three Butt-Uglies in their B.K.M. suits are playable. The player must find keys to unlock doors while shooting at enemy robots, turrets, etc. Weapons and defense can be upgraded via power-ups. There are 28 levels spanning 7 worlds, with a boss following the end of each level. Memory Erase Crystal can be picked up to use against Stoat Muldoon should the player encounter him in a level. There are three difficulty levels: Easy, Medium and Hard.
Five hidden colored gems can be collected to unlock content in Butt-Ugly Martians: Zoom or Doom for the Nintendo GameCube when the Game Boy Advance is connected to the system.