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.
Lil Guardian Pyro
Lil Guardian Pyro is the winner for the best overall prize at this year's Valve Saxxy annual animated film competition.
Team Fortress 2 - Mann vs. Machine
A robot faction is introduced into the Team Fortress 2 equation, via this amazing new trailer by Valve.