Portal joins forces with Half-Life in this short film called When Gordon Met Chell.
Portal: Survive! is a live-action short film based on the Portal game, and its tie-in comic Portal 2: Lab Rat.
Portal 2 - Valentine Trailer
Valve have shown us they're true romantics, with this special trailer for Portal 2.
Beyond Black Mesa
Check out Beyond Black Mesa, an action packed short fan film based on the Half-Life series.