Change border
Pause game play and press [B]. Note: This may also be done at the game over screen.
Toggle music
Press [Select] at the mode selection screen. A musical note will appear when music is enabled. Note: Music only is played in modern mode games.
Classic Ball mini-game
Earn 10 stars during game play. Note: A star is awarded for every 200 points in a game.
Museum
Earn 10 stars during game play. This also will allow the music room to be accessed.
Yoshi Ball mini-game
Earn 15 stars during game play.
Oil Panic
Earn 20 stars during game play.
Modern Ball mini-game
Earn 25 stars during game play.
Green House
Earn 30 stars during game play.
Mario Ball mini-game
Earn 35 stars during game play.
Life Boat
Earn 40 stars during game play.
Wario Ball mini-game
Earn 45 stars during game play.
Donkey Kong Jr.
Earn 50 stars during game play.
View credits
Earn 50 stars during game play. After the credits appear once they can be displayed again by holding [Down] and pressing [A] at the gallery screen.
Soundstation
Earn 55 stars during game play to unlock additional music.
Tropical fish
Earn 60 stars during game play.
Rain shower
Earn 70 stars during game play.
Spit Ball Sparky mini-game
Earn 80 stars during game play.
Bowser Ball mini-game
Earn 100 stars during game play.
View cast
Earn 120 stars during game play. After the cast appears once they can be displayed again by holding [Up] and pressing [A] at the gallery screen.
Star mode
Earn 1,000 points in modern mode to unlock Star mode at the mode selection screen. Note: It may not appear inall games.
Play as Wario
Select the Helmet game and begin under the easy difficulty setting. Intentionally lose before accumulating 100 points, then select the "Retry" option. The game will restart with Wario as a character.
Soundstation
Earn 6 stars during game play.
Instant save:
Pause game play and power off the Game Boy. When the Game Boy is powered back on, the game will automatically resume at the last point played.
Reset saved game
Press [Up]x2, [Down]x2, [Left]x2, [Right]x2 at the main screen.