Released: 2004
Developer/Publisher: Namco/Now Production for Namco
Platform(s): PS2

You're a magical space ball sent to earth with the ability to pick up anything you roll over, growing in size as you pile on more and more stuff. Anything is fair game, starting with small objects like thumbtacks and ants, eventually leading to people, houses, and mountains as the game progresses. Crazy original and crazy fun. 

The game's Japanese name translates to "clump spirit."