Hard versions:
To unlock the Hard difficulty for an activity, earn the highest rank for that activity. Core activities require an “Advanced” rank of 80%. Sports activities require a “Pro” rank of 90%. Alternately, unlock the Hard difficulties by collecting 15 Stamps.
Holiday greetings:
To receive a holiday greeting, set the Nintendo DS system date to New Year’s Day, Halloween, Christmas, or your birthday.
Daily training bonuses:
Unlock the following bonuses by collecting the corresponding amount of stamps:
BONUS – STAMPS
‘C’ Count – 7 Stamps
Basketball – 4 Stamps
Circle Spot – 5 Stamps
Custom Training mode – 1 Stamp
Eye Knowledge mode – 14 Stamps
Fast Match – 9 Stamps
Football – 10 Stamps
Letter Count – 3 Stamps
Number Tap – 11 Stamps
Record Challenge mode – 13 Stamps
Soccer – 8 Stamps
Stamp Design No.5 – 12 Stamps
Stamp Design No.6 – 15 Stamps
Table Tennis – 2 Stamps
Volleyball – 6 Stamps