Normally, Perfect Challenges are given randomly after a certain period of time. However, if you get a superb on all games (not including gatekeeper minigames or games you buy from the shop), as soon as a Perfect Challenge ends, you are given another immediately.
Easy Quiz Perfect
It's possible to earn a Perfect in the unlockable Quiz minigame by intentionally getting the first practice question incorrect.
Exchange Flow Balls for Coins
Usually, Flow Balls unlock Rhythm Games from the shop. However, if you've already bought all the shop games, you will automatically receive 30 coins for each extra Flow Ball in your possession by talking to Saffron.
Mascots
While you are playing the game, you may notice Tibby in the bottom-right corner of the screen when the game is loading. However, you can obtain mascots to replace Tibby in the loading screens by feeding your goat to certain levels, every ten levels, up too 200.
Mascot
How to unlock
Barista
Get your goat to level 170.
Bertram
Get your goat to level 110.
Betty
Get your goat to level 120.
Boondog
Get your goat to level 10.
Colin
Get your goat to level 150.
Dieter
Get your goat to level 20.
Donna
Get your goat to level 40.
Eglantine
Get your goat to level 60.
Hairold
Get your goat to level 50.
Paprika
Get your goat to level 100.
Philip
Get your goat to level 140.
Rupert
Get your goat to level 190.
Saffron
Get your goat to level 80.
Saltwater
Get your goat to level 90.
Samurai Drummer
Get your goat to level 200.
Shep
Get your goat to level 30.
The Goat
Get your goat to level 180.
Tibby
Get your goat to level 130.
Tibby's Mom
Get your goat to level 160.
Trey
Get your goat to level 70.
Music Player Drums
In the Café Museum, before selecting a song for the music player, hold L and R while pressing A. This enables you to play drums with the song (the D-Pad, ABXY and LR buttons create different drum sounds.) To exit the player during this mode, you must press and hold L, R, and B at the same time for about 3 seconds.
Paprika World
Complete all the challenges in Saffron World and Saltwater World (you do not have to do the 'Super Hard!' Challenges). Tread Carefully! Paprika World is no joke.
Wario... Where?
Complete all challenges in Paprika World (excluding the Super Hard ones).