Q: What were the origins of Spore?
Will Wright: The earliest evolution of it had to do with the SETI Project. The original concept was sort of a toy galaxy you could fly around and explore. As we thought about, it became apparent that evolution was a very important component. Some of the very first prototypes involved how you would move around and visualize the galaxy. And then on procedurally generated creatures. Could we actually generate creatures through evolution so there was a vast variety of creatures rather than just the 20 or 30 fixed things that games typically include.

cNET – Will Wright on the origins of ‘Spore’