Play as The Prince from Katamari Damacy :
Beat the circuit races and rally under the easy difficulty setting.

Play as Pooka from Dig Dug :
Beat the circuit races and rally under the normal difficulty setting.

Play as Fygar from Dig Dug :
Beat the circuit races and rally under the hard difficulty setting.

Black Bomb:
Eat five blue ghosts in Pac-Mobile mode to unlock the Black Bomb upgrade for the Green Bomb.

Easy Classic Cup:
Get a Gold medal in the Easy Watermelon Cup.

Easy Rally Cup:
Get a Gold medal in the Easy Classic Cup.

Easy Watermelon Cup:
Get a Gold medal in the Cherry Cup and Grape Cup.