Challenge mode:
To unlock Challenge mode, have a Brain Age score of 20.
Slideshow mode:
To unlock Slideshow mode, beat any three themes.
Stamp Bonuses:
Collect the following numbers of stamps to unlock the corresponding bonuses. One stamp can be 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.
STAMPS – HOW TO UNLOCK
1 stamp – By The Numbers training mini-game
3 stamps – Stamp Design mode
5 stamps – Battle mode for Sum Totaled mini-game
7 stamps – Tips mode
10 stamps – Change Maker training mini-game
12 stamps – Virus Buster training mini-game
15 stamps – Comment Settings
17 stamps – Change Pin Tip mode
20 stamps – Triangle training mini-game
23 stamps – Calculations X 100 Hard mode
25 stamps – Multi Tasker training mini-game
28 stamps – Triangle Math Hard mode
30 stamps – Multi Tasker Hard mode
Alternate main menu:
Speak the words “Brain Age Express” into the microphone to surprise Ruyta Kawashima and make his head multiply.