Brain Age 2: More Training in Minutes a Day Cheats - Nintendo DS

Daily Training's Training Unlockables
Perform the following tasks in order to unlock new contents:

Block Count - (Hard Mode) - Get 26 Stamps
Calculate the Height (Hard Difficulty) - Attain a perfect 5/5 score
Calculate the Height - Get 22 stamps
Correct Change - Get 01 Stamp
Days and Time - Get 06 Stamp
Determine the Time - Get 16 Stamp
Finish Position - Get 10 Stamp
Hard Mode for Sign Finder - Attain a time of 17 seconds or less
Word Blend (Hard Mode) - Get 12 Stamp
Word Blend (Hard Mode) - Score 100 points
Masterpiece Recital - Hard Difficulty - Attain a perfect 100 score
Memory Addition - Hard Difficulty - Get 24 stamps
Memory Addition - Get 03 Stamp
Memory Addition - Hard Difficulty - Attain a time under 40 seconds
Missing Symbols - Hard Difficulty - Get 20 Stamp
Select Song Masterpiece Recital - Get 14 Stamp
Stamp Designer - Get 08 Stamp
Sudoku Advanced Difficulty - Solve any Intermediate level puzzle in less than 15 minutes
Tips Option - Get 05 Stamp
Virus Buster - Get a stamp for the day, the go to the last selection, and select it.
World Blend - Get 02 Stamp

These are the unlockables in the US version:

Access Brain Tips - 05 Stamps
Block Count (Hard Mode) - 26 Stamps
Block Count Game - 22 Stamps
Calendar Count Game - 06 Stamps
Change Maker Game - 02 Stamps
Choose Songs on Piano Player - 12 Stamps
Clock Spin Game - 16 Stamps
Math Recall Game - 10 Stamps
Math Recall Game (Hard Mode) - 24 Stamps
Memory Sprint Game - 01 Stamp
Piano Player (Hard Mode) - 18 Stamps
Sign Finder (Hard Mode) - 20 Stamps
Stamp Designer - 08 Stamps
Word Blend Game - 03 Stamps