It's an unusual situation, to say the least. The Spore Creature Creator is one small part of the full game of Spore, due out on 5th September. Specifically, it's the bit - and smart, title-reading readers will spot this - about creating the creature. You stick bits together, in the manner of a 21st Century Mr. Potato Head, and watch it animate. There's no game. Of course, since one of Spore's main selling features is that your in-game universe will be populated with everyone else's creatures, they'll turn up in a game eventually, but right now there's nothing more than making a creature out of computer clay and marveling as Maxis' magic brings it to life. Maybe put it in front of a different background. Make it dance. Make it play with kids.
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Review: Eurogamer