Complete the indicated level to unlock the corresponding mini0game at the Challenge menu.

Banana Grab mini-game: Complete level 1-1 'Cranky's Teachin's'.
Booster Battle mini-game: Complete level 5-1 'Space A-Go-Go'.
Rolling Panic mini-game: Complete level 1-1 'Cranky's Teachin's'.
Speed Climb mini-game: Complete level 1-1 'Cranky's Teachin's'.
Throw 'n' Crush mini-game: Complete level 2-3 'Road To Ruins'.