Be good to your Chao by rewarding him!
What is this place?
[CHAO: Artificial life]
Chao which you all have grown to love has become more intelligent and cute! Improved intutitive communication and response with Chao increases Chao Fun! You won't be able to leave your Chao alone with the improved VMU Chao mini-game with secret features.
Looks like everyone's favorite Chao are back with new features too. By the looks of the second pic, the Chao must get their own room with luxuries! Source: SonicTeam