We haven't seen it yet, but that doesn't mean a Half-Life movie won't ever happen.
In fact, Valve writer Marc Laidlaw has obviously been thinking about it quite a bit; specifically, he has been thinking about the best possible director for the big-screen project.
Laidlaw comes up with three top-notch options:
"If Paul Verhoeven returned to science fiction films, he would do something insane with Half-Life…maybe something objectionably insane, but at least not boring. Peter Jackson has proved himself an amazing purveyor of faithful adaptations. Guillermo del Toro has the horror vibe that I think a lot of people miss out on when thinking about a Half-Life movie. Half-Life is essentially horror after all. The science in it barely passes as hand-waving, but when a headcrab jumps at your head, it’s a precisely engineered jolt."
You probably wouldn't go wrong with any of those guys. Verhoeven is best known for the smash hits "Robocop" and "Total Recall," and I think we're all familiar with Peter Jackson's Lord of the Rings trilogy. As for del Toro, he directed "Hellboy" and one of my personal favorites, "Pan's Labyrinth." He's also working on a new game, inSane , which has apparently found a new home. We just need to learn more about it.
But as for a Half-Life film, I actually want to see that happen. They first started talking about it nearly a decade ago (2003) when Half-Life 2 debuted at E3. Maybe it's about time we had a big-screen adaptation, yes?