I've been playing TF2 for about a year now, and I must say it is possibly the greatest game I've ever played. My only experience with mapping game from two very different games. I used to do a lot of mapping and modding for the old game Star Wars: Battlefront II, which is very different. More recently I started playing around with Left 4 Dead in Hammer. Now I'm ready to try out TF2 and see what happens.