4. Sin City
A visually gripping film, with the "less is more" attitude to it's display in just black and white, with the occasional outbursts of colour for great effect, plus its epic storyline, Sin City would have made a truly gripping video game title. On a personal level, I happen to thoroughly enjoy a deep and dark storyline that you can truly embed yourself in and get lost in for many days, if not weeks. Sin City did all that for me, just as a movie. If this was released as a video game, the ability to play as any of the main characters would be a real tease. Imagine controlling the main protagonists of the movie, such as Marv or John and relishing in their storyline? It couldn't be more of a perfect recipe for a video game.