Mario Golf

Go to code select by pressing Z-R-A when clubhouse is highlighed and in cheat select type 0EQ561G2. Do the same thing as the first code, but put in the code 5VW689O6.

Successfully defeat a character in versus mode to unlock them as a playable character.

When you're choosing your character, you can change the outfits by holding one of the C-buttons.

Beat Course 4: Yoshi's Island in Ring Shot mode to get Donkey Kong.

You must pick Yoshi and on the course press B until it says power. If you get a shot, even with the two lines, you'll see a rainbow. To get a fireball do the same thing except pick Mario.