Not sure if anyone on here has seen one of the links to this demo online, but if not you really owe it to yourselves to check out
Darwinia. It's the second offering from small time company Introversion, who also gave us the impeccable Uplink. The demo is a Damn good time and I cannot wait for the full version in march.
Now off with you! Go and check it out. Go on now!
-Flock