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 ...

Half-Life and Steam creator Valve have announced that the company's Source Engine and modding tools will now be made available completely free of charge. The software development kit (SDK) for the ...

Valve has announced that the latest release of their Source Engine SDK has been released and that it now includes full support for the Oculus Rift Virtual Reality head mounted display. We have ...

Valve just released the entirety of the Team Fortress 2 client and server source code, and it wasn’t even an accident. In a ...