First non-game titles now available on Steam, game dev tools lead the chargeBy B. Gilbert, 10.02.2012
Valve reportedly preparing second-generation Source engine, kinda explains the Episode Three delayBy D. Cooper, 08.06.2012
Valve Source Filmmaker makes a movie out of any Source game, now you're directing with Portals (video)By J. Fingas, 06.28.2012