One of the immediate reactions to Darwinia was that it might make an entertaining multiplayer game. Introversion, stretched for time and resources, had expressed their intention to create a multiplayer aspect, but needed to get the game finished. With continued interest in the multiplayer concept they concluded that rather than simply making a multiplayer add on for the original game, a totally new game was required. Hence: Multiwinia.
Darwinia, and all of Introversion’s previous titles, was released for Linux (demo).