Best First Person Shooter Ever!

I bought this set, got the cool t-shirt, and then proceeded to get the game off of Steam. Steam worked flawlessly, and the game runs smooth at 800x640 on my old 1.4ghz amd athlon with a 9600 pro vid card. Tons of other free games come with this set too like the remastered half-life(runs smooth at 1024x768), CS: Source(800x640). I could upgrade my computer hardware for better framerates, but I think it looks good the way it is.