1. Dungeon Dash
Complete the Mini-Game Coaster on Normal, then go to the Park (with the trees). A Pirhana Plant will give you this Desert Dash remake for here and the boards.
2. Rainbow Run
Buy EVERY Mini-Game (including Item and Battle ones) to get this Tightrope Wake remake from old Pirhaney.
3. Driver's Ed
Buy all the Mini-Games, then talk to Woody. He'll let you inside of him for this 1 player 5 level mini-game. Drive through the cones in the indicated order and direction.