Castle Court

Play Luigis Shooting Star mini-game and win both levels. When you get to the third level, beat the high score of 60 to unlock the Castle Court in linked play and exhibition modes

Tropics Court

Play Baby Marios Target Shot mini-game and win both levels. When you get to the third level, beat the high score of 60 to unlock the Tropics Court in linked play and exhibition modes

Jungle Court

Play Donkey Kongs Banana Bunch mini-game and win both levels. When you get to the third level, beat the high score of 60 to unlock the Jungle Court in linked play and exhibition modes

Star Court

Play Marios Boo Blast mini-game, complete levels 1 and 2, and beat the high score to unlock the Star Court

Play as Students

Defeat the students you face in the Junior, Senior, Varsity, and Traveling Leagues to unlock them at the character selection screen

Play as Mario

Successfully complete the game in Singles

Play as Peach

Successfully complete the game in Doubles

Nintendo 64 characters

Use the Transfer Pak with the Nintendo 64 version of Mario Tennis. Select "Transfer" at the main menu, then select "Game Pak Check". After it checks, an icon that says "Transfer N64 Characters" will appear. This will allow you to play as Bowser, Waluigi, Wario, and Yoshi

More mini-games

Unlock the Nintendo 64 characters, then check the mini-game screen. More entries should be available. To unlock even more mini-games, win the Junior, Senior, Varsity, and Traveling Leagues in Singles and Doubles

Game reset

If you lose a game in RPG mode, pause the game immediately before the score appears. Save the game, quit, then resume the game you were just playing. The game (not match or set) will be reset

Gold or Silver Racket

After becoming part of the traveling team, equip the Iron racket, and head towards the lake yb the training courts. Engage in a pound the A button repeatedly mini-game, and you will earn the favor of a water sprite and one of the elusive rackets upon racking up 100 swings