In this game by American McGee you play as D-Tritus, a robot new to Scrapland, an asteroid inhabited entirely by robots inside a giant debris field, who has to stop someone from killing several important robots and taking over Scrapland.

"SCRAPLAND is a third person action-adventure game set in a stunningly beautiful and futuristic world occupied by an amazing array of robotic characters. The play experience is driven by a solidly engaging, sometimes humorous adventure narrative. The game mechanic combines proven GTA3 style emergent action with an immersive storyline, diversity of player actions, and complete freedom of movement through the world. Throughout the game the player can: transform into any of 15 character types inheriting unique abilities, build and pilot ships with hundreds of permutations, engage in explosive combat, participate in life-on-the-line races, and freely explore a truly dynamic and living world."