Surprise! Valve's just released a massive update to the Source SDK, adding "all" the Team Fortress 2 client and server game code. Valve said the update lets players build entirely new games from ...

Games FPS Games Team Fortress 2 Valve adds "all the Team Fortress 2 client and server game code" to its Source mod tools, letting modders "build completely new games based on TF2" and publish them ...