Valve out of the blue announced a free game that can be downloaded on Steam. It's called Alien Swarm and is a top-down 4 player co-op shoot-em-up game. I'm downloading it right now and am excited to give it a try. Here's the link:

http://store.steampowered.com/app/630/

The gameplay video of it looks fun. I hope that there are strong tactical components to the game and not just another right index finger exercise game. We'll just have to see.

I think that it's really cool that Valve puts our free stuff like this once in awhile. They are by far the greatest supporters of PC gaming. Thanks Valve