Steam released a pretty cool game called Alien Swarm recently. It is top down co-op. Best part is it is free. I thought it would suck but it doesn't and I cant stop playing. It has prestige too like CODMW2. Had they made the game longer, this could have made some money. check out the trailer.
tiny link to the website.
http://tiny.cc/dyy0b
tiny link to the website.
http://tiny.cc/dyy0b
