I'm not really sure what genre you'd put this in but it's like if you mixed NIGHTS with a platforming action game. One of the few times I'd say the Wii remote adds to the experience of a game.
Basically a game where you try and beat your previous record, and nothing more. You play it in less than 10 seconds a session, and you really gotta jerk that joystick just right. It's fun to play two player and see who can get the best time.