I've tried Animal Crossing and it didn't really catch me. I know Brain Age and Planet Puzzle League have the 'Daily Play' option which to me seems really cool. I like games that give you an incentive to keep coming back every day. Just little touches like when games know what time of day it is (Dr. Kawashima yawning when you play at midnight is a good example). I was just wondering if people knew of other games which just keep forcing you to come back and play them through various ways, even if it's just to do a Brain Age check for two minutes. Seems like a great idea, and perfect for a portable.