Super Monkey Ball 2 ISO

There's 15 separate games, all of which are incredibly fun. The main game is basically a 3D version of the Nes classic Marble Madness. That comparison doesn't really do SMB2 justice though. There are 150 courses here, while Marble Madness only has 7 or 8. Some of the SMB2 labyrinths are very challenging due to a slow, yet consistent increase in difficulty over the many stages. I imagine the course designers laughing it up at how devious some of the labyrinths are. My only complaint with SMB2 are occasional stutters in frame rate, and the camera sometimes isn't perfect.

Probably one of my favorite racing/party games for Gamecube. There's a variety of game modes; Puzzle/Story, Fighting, Bowling, Tennis, and many more.