Portal: Survive! is a live-action short film based on the Portal game, and its tie-in comic Portal 2: Lab Rat.
Portal: No Escape
Check out this excellent short film based on the Portal video games, called Portal: No Escape.
Half-Life Black Mesa
A relentless team of fans have finally released Black Mesa a remake/upgrade of the first Half-Life game from Valve.
Counter-Strike: Global Offensive - Trailer
Valve show a grittier more realistic use for Source Filmmaker with a trailer for Counter-Strike: Global Offensive.