Daily training unlockables 
     Earn  stamps  by  playing through one of the recommended training
activities every day.

     Stamps  will  unlock the following bonuses up to a certain point,
after  which  you'll just unlock hard modes for all the activities you
haven't already done so for.

Unlockable:              How to Unlock:
Custom Training mode     Get 1 stamp 
Table Tennis             Get 2 stamps 
Letter Count             Get 3 stamps 
Basketball               Get 4 stamps 
Circle Spot              Get 5 stamps 
Volleyball               Get 6 stamps 
'C' Count                Get 7 stamps 
Soccer                   Get 8 stamps 
Fast Match               Get 9 stamps 
Football                 Get 10 stamps 
Number Tap               Get 11 stamps 
Stamp Design no.5        Get 12 stamps 
Record Challenge mode    Get 13 stamps 
Eye Knowledge mode       Get 14 stamps 
Stamp Design no.6        Get 15 stamps 

Hard modes 
     Attain the highest ranking for an activity to unlock its hard mode.
     Core  games  require  an "Advanced" (80%) and sports games need a
"Pro" (90%).
     Alternatively,  you  can  unlock the hard modes by earning stamps
after all the activities have been unlocked.