In the run-up to the launch of “Spore,” the latest creation from “The Sims” creator Will Wright, Electronic Arts has released “Spore Creature Creator,” a sort of prequel to the full game, which is set for release in September. “Spore” is a massively single-player online game that puts the power of biological evolution in the hands of its players. Developed for play on PCs and Macs, the game follows a species from single cell organisms bathed in primordial ooze to sentient beings with intelligence and a social culture to intergalactic explorers in a space-faring society.