Cubivore: Survival of the Fittest is a GameCube game developed by Saru Brunei and published by Nintendo (Japan) and Atlus (America). You take the role of a Cubivore who plans to overtake the king Killer Cubivore who is placed at the top of the foodchain. The goal of the game is to produce offspring, each one being more powerful than the one before it. After going through 100 offspring, the Cubivore will be so powerful that it can finally overtake the king.
Combat involves your character tearing another Cubivore apart once its health has reached a low enough level. You can perform many different actions, and while tearing limbs seems violent for an E rated video game, its done so in a lighthearted manor. Limbs can be consumed by your Cubivore, which will cause it to gain a bit of health. Bosses have special limbs that, when absorbed, will give the player new powers.
Alpha is a creature found in Cubivore that was present as a trophy in Super Smash Bros. Melee for the GameCube. Interestingly, the game came out before the release of Cubivore.