Valve has decided to make its Source SDK free for all users, rather than require at least one Source title be purchased to obtain access to the engine. Valve has confirmed that its Source software ...

After months of alpha releases, Estranged , a first-person shooter/exploration mod for the Source Engine, has finally entered beta! With new (and reworked) maps, new voice work, and new models, ...

Valve has released a 2013 update for the Source Engine SDK, adding support for Mac and Linux systems as well an enabling development for the Occulus Rift. The SDK will also be available from github ...

Team Fortress 2 remains a very popular multiplayer game, and that's in no small part to the many updates that Valve has released for the PC version of the game, overhauling many of the existing ...