Alien swarm- http://store.steampowered.com/app/630/
Alien swarm- http://store.steampowered.com/app/630/
If you want games as well.. there's always the Spring Project games.
http://springrts.com/wiki/Games
The one most well known is probably TA Spring (freeware version of Total Annihilation)
Frag the weak, hurdle the dead!
I wouldn't recommend AVG, it just eats away at your resources, it some ways it's as bad as Norton...
what is the best anti virus software?