Here's quick roundup of two interesting games for you to try out;

Firstly we have Age of Booty, a cartoony Pirate RTS which really looks like quite a laugh, I'm currently downloading it, so hopefully it'll be worth the time. Via FilePlanet.

Also a demo of the truely brilliant Multiwinia is available from the game's official site. I honestly reccomend this one above all else; the original Darwinia was utterly stunning and playing it online against others? Brilliant!