Get over 100 points in Jump Forever to unlock three alternate songs the next time that mini-game is played.
Boss mode
Successfully complete the game to unlock an option to fight just Bosses.
Control Credits Music
During the credits press L to boost the bass and press R to boost the treble.
Dr. Wario mini-game
Get 15 mails against Blue Jimmy.
Easy Mode
Defeat Wario to unlock the "Easy mode" option.
Fly Swatter mini-game
Get 20 mails against Yellow Jimmy.
Hard Mode
Get at least 15 mails in Thrilling mode.
Intermission bonus
During a break when it shows a character, press A and something will happen.
Music Test
Choose the "Name Entry" selection at the options screen. Select "Yes" to enter a name. Do not actually enter a name. Instead, press L to display the music test screen.
Paper Plane mini-game
Successfully defeat Red Jimmy.
Pyoro
To unlock the game seen in the intro, Pyoro, simply play every game of every character.
Pyoro 2
To unlock Pyoro 2, the sequel to Pyoro, get medals on every game in Game Practice mode.
Scroll faster on grid
You can scroll through the writing faster on the grid by tapping or holding L or R.
Staff mode
Successfully complete the game to unlock an option to view the game's developers..
Thrilling Mode
Complete the game in easy mode with a high score to unlock the "Thrilling mode" option.