5. The Last of Us
The Last Of Us actually is in the works as a movie, but it's in the works in the same way The Last Guardian was in the works, which is to say, it might happen, someday, ten years after it was announced.
rnWhile you shouldn't be holding your breath, it would be amazing to see this story play out on screen, without some of the filler that made the game feel bloated at time, but with all the character and the amazing set pieces (tilted skyscraper anyone?) brought to life on screen.