There was a thread awhile back about it, which I don\'t know if it\'s still around or it got deleted in the shuffle of forums. I\'ll look up the link here in a second, but basically think of it like the SIMS but with cute furry lil critters. The gameclock is set to the consoles internal clock, so events happen weither your there or not. I don\'t quite think this is a GREAT idea, but it does help fulfill the illusion that it\'s a living breathing world you\'re watching and manipulating.
There\'s also a card reader peripheral (Not sure if it\'s included or sold seperately) which you can use to scan off cards you buy at WalMart or other stores which unlock mini-games, events, and secrets.
