Not many people know this but Introversion's IGF award-winning title Darwinia was released incomplete: Darwinia was originally conceived as a multiplayer game.
Initially codenamed "Future War", the main game design centered around players who could take control of a massive sprite army, that could then be pitched against another players armies in massive battle-epic style. The trouble is, we ran out of money spectacularly.
As the finances at Introversion dwindled the original multiplayer component for Darwinia was hastily dropped. It wasn't until some months later, reveling in the unexpected kudos of winning those IGF awards that the opportunity for us to revisit the earlier multiplayer idea was revived.
Microsoft wanted to bring Darwinia to XBLA, and with that came the need for a multiplayer component - this would in time develop into an entirely new game called Multiwinia, which IV launched on PC at the end of 2008. Multiwinia, along with Darwinia will be released on Live Arcade as Darwinia+ this summer, a momentous occasion for us as Introversion's first release onto a console.