It took almost 20 years, but Team Fortress 2, the team-based FPS that changed a great many lives when it debuted in 2007, now has an SDK that Valve says will enable creators "to build completely ...

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 News By Dustin Bailey ...

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 ...