"Spore Creature Keeper is the Spin off game to the 2008 game Spore. Made for younger users, the gameplay is heavily based on The Sims. It will be released sometime in Late 2010 for Windows Vista, Windows 7 and Mac OSX. It will be the first ever EA Game not to be compatible with Windows XP, Not even SP3.
The graphics are basic, and the interface is much simpler than Spore.
Source: Wikipedia, "Spore_Creature_Keeper," available under the CC-BY-SA License.