cjackson92 said:
Dead Space

and Resistance (but the movie would find a way to suck)
Dead Space already is. In fact, the film came out before the game. (so does that make Dead Space a movie to game adaptation?)
Personally, there's only one game I want to see made into a film. Half-Life. Frankly, it's one of the very, very small few games out there that actually has a decent story all but tailor-made for a film. Hell, it could be made into a whole series with the amount of narrative behind it. They could even go so far as to cover the Portal side story. Valve apparently shopped the idea around to a few movie studios. Some major, some not, but all of them submitted horrific and very poorly written scripts. Of which, Valve turned down.
However, that said, there is a Prince of Persia film in the works. It's being spear-headed by Jerry Bruckheimer productions and the script is being co-penned by the original creators and writers of the original game as well as Sands of Time (and some Hollywood writers, who knows). I'm cautiously optimistic about it.