Valve are introducing the Perpetual Testing Initiative for Portal 2 with this new amusing trailer.
Portal Trick Shots - VFX Breakdown
Corridor Digital talk about how they created their recent Portal Trick Shots short film.
Portal: Survive! is a live-action short film based on the Portal game, and its tie-in comic Portal 2: Lab Rat.
Counter-Strike: Global Offensive - Trailer
Valve show a grittier more realistic use for Source Filmmaker with a trailer for Counter-Strike: Global Offensive.