Have a Brain Age score of 20 to unlock Challenge mode.

Successfully complete any three themes to unlock Slideshow mode.

Collect the indicated number of stamps to unlock the corresponding bonus. One stamp is earned each day that a training mini-game is completed. Note: To play the Virus Buster training mini-game, you must have earned a stamp for that day.

By The Numbers training mini-game: 1 stamp
Battle mode for Sum Totaled mini-game: 5 stamps
Stamp Design mode: 3 stamps
Tips mode: 7 stamps
Change Maker training mini-game: 10 stamps
Virus Buster training mini-game: 12 stamps
Comment Settings: 15 stamps
Change Pin Tip mode: 17 stamps
Triangle training mini-game: 20 stamps
Calculations X 100 Hard mode: 23 stamps
Multi Tasker training mini-game: 25 stamps
Triangle Math Hard mode: 28 stamps
Multi Tasker Hard mode: 30 stamps