A new version of Source SDK has been released to give you an easier entrance to making games for Team Fortress 2.
Instead of having to start from the beginning and designing a new map for TF2, you can now tweak and adjust the maps you allready know. It will make it much easier for you to start making maps, since you can quickly see results. Maybe you just want to make a hidden door for yourself for the next LAN-party, or you want to turn the dynamics of the map upside down. Now you can try yourself with the Source SDK, which you can download with Steam.
The maps you can start playing around with is Lumberyard, Ravine, Badlands, Dustbowl, Granary, Gravelpit, 2Fort, Badwater, Goldrush, and Hydro.

