Darwinia.

Viking

Precursor

Darwinia looks like it can become one of the mightiest games ever.

Get the demo, and try.

http://www.darwinia.co.uk/downloads/index.html

And, here's a mirror if you can't get it from that link:
http://www.3dgamers.com/games/darwinia/downloads/

Thread title:

直死の魔眼使い

What's it about?

I('d) like to watch (some MP3 runs)

Charles Darwin and evolution.

You capture little animals on the Galapagos Islands and get to experiment on them.

Viking

Precursor

Quote from DominicanZero:

What's it about?

Um... I'm not really sure.

But you are inside a computer and stuff.

It feels a little like a crossover between Cannon Fodder and Black & White.