Stole this from 1up's forum:
What are your thoughts on the Disney Super Mario Bros. movie?
Well, when we first initiated talks about a Super Mario Bros, movie, I tried to emphasize the point that the Mario Bros. games are fun as videogames and if we were going to make a Mario Bros. movie, that movie should be entertaining as a movie, and not a translation of the videogame. I think that they tried very hard and in the end it was a very fun project that they put a lot of effort into. The one thing that I still have some regrets about is that the movie may have tried to get a little too close to what the Mario Bros. videogames were. And in that sense, it became a movie that was about a videogame, rather than being an entertaining movie in and of its self.
Why do you think so many translations of video games to films haven't succeeded?
I think that part of the problem with translating games to movies is that the structure of what makes a good game is very different from the structure of what makes a good movie. Movies are a much more passive medium, where the movie itself is telling a story and you, as the viewer, are relaxing and taking that in passively. Whereas videogames are a much more active medium where you are playing along with the story. In some cases, you are progressing the story yourself, or perhaps you get to a point where it gets too difficult and maybe you "I think that people who like movies also have an interest in the creative work that goes into making a videogame."give up. So there is interactivity with the videogame that you don't necessary have with a movie. Inthat sense, I think the structure of the two are very different and you have to take that into account when converting a videogame into a movie. I think that videogames, as a whole, have a very simple flow in terms of what's going on in the game. We make that flow entertaining by implementing many different elements to the videogame to keep the player entertained. Movies have much more complex stories, or flow, to them, but the elements that affect that flow are limited in number. So I think that because these surrounding elements in these two different mediums vary so greatly, when you fail to take that into account then you run into problems.