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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 on Steam

Valve has just issued a massive Source SDK update giving modders access to the Team Fortress 2 game code, opening the door for them to build all-new games based on the classic FPS and publish those ...
IGN

Team Fortress 2 Modders Rejoice as Valve Releases Full Client and Server Game Code

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 its ...
Eurogamer

Valve releases Team Fortress 2 source code, opening door to completely new fan-made games

Team Fortress 2 maker Valve has handed over the game's full client and server code to fans, encouraging them to "change, extend or rewrite" TF2 in any non-commercial way possible. The code is now ...
TechSpot

Valve releases full Team Fortress 2 SDK, modders gain control over the game's code

Why it matters: Team Fortress 2 launched 17 years ago but still receives significant updates, and its player base is as healthy as ever. The latest patch fully unlocks the game's SDK, releasing ...