If anyone has seen the famous 1983 cult classic
WarGames, they will recognize this name. For those who haven't: Matthew Broderick plays a teen hacker who hacks into a government database and finds a game called Global Thermonuclear War; it turns out that the 'game' is in fact a NATO defense system and he almosts starts World War III. Anyway, the people who made Darwinia have recreated the game from the movie, it's avaiable on Steam, check it out
here.
Here are a couple of screenshots:
This is one of the most fun strategy games I've played, I would really recommend checking out the free demo version.