Brain Age Express: Arts And Letters [NDS]

Destroy all enemies in Space mode in Word Attack:
Press A, Y, X, B to destroy all of on screen enemies. Note: This can only be done once every time you train.

Unlock Challenge Mode:
Any time after the initial Brain Age Check, if you obtain a Brain Age score of 20, you will unlock the Challenge Mode. NOTE: This is MUCH harder than what you normally do in Training.

Stamp rewards:
Do a Training game or a Brain Age Check to get a stamp. Note: This only happens once per day. Collect the indicated amount of stamps to unlock the corresponding bonus. Note - To play Virus Buster after it is unlocked, you must have a stamp for that particular day.

BONUS - STAMPS REQUIRED
Change Pen Tip - 22 stamps.
Change Stamp Design - 3 stamps.
Comment Settings - 8 stamps.
Meet and Greet - 24 stamps.
Meet and Greet Hard Mode - 30 stamps.
Photo Recall - Hard Mode - 18 stamps.
Piano Player - 10 stamps.
Piano Player Hard Mode - 27 stamps.
Select the Piano Player song - 20 stamps. Note: This can only be done the second and subsequent times each day.
Slideshow Mode - Complete any two Themes.
View Tips - 16 stamps.
Virus Buster - 13 stamps.
Word Attack - 1 stamp.
Word Attack - Space mode - 6 stamps.

Slideshow mode:
Complete two themes to unlock Slideshow mode.

Challenge mode:
After the initial Brain Age Check, get a Brain Age score of 20 to unlock Challenge mode.