According to J.J. Abrams, the Portal and Half Life movies are still in development, and we should expect a Portal announcement very soon.
Abrams told IGN that the films were, “still very much in development.”
We have a meeting coming up next week with Valve, we’re very active, I’m hoping that there will be a Portal announcement fairly soon.
When asked if the films were to follow the storylines of the games, Abrams deflected in his reply by saying:
We are having some really interesting discussions with writers, many of whom…once you said you’re doing a movie or show about a specific thing that is a known quantity you start to find people who are rabid about these things. As someone who loves playing Half Life and Portal, what’s the movie of this, it’s incredible when you talk to someone who just ‘gets’ it, it’s like, oh my god, it’s really the seed for this incredible tree you’re growing.
I could see the Portal movie possibly following a different story, but to think of a Half Life movie not being based on the actual story just doesn’t make much sense to me.