Really, I'd prefer none. But I'd go with Halo from the choices open. It seems like it's the best one on the list. Most of those games are open-world, and trying to get a movie of an open-world game with a good story while keeping the 'game' feel to it would likely trip most of them up. Also 'Final Fantasy' isn't a good poll option in my opinion, as it's a series that, unlike the others, doesn't actually have much continuity between games, so a movie based on the general FF series is impossible since it's a constantly changing series. That said, that does have two movies out, so it also shouldn't really be on there. Just saying. ^^;
Going off from the choices, I'd like to see a movie based off Mass Effect, set in the same universe but not following Shephard. A gears movie could be good for a just a action movie that doesn't try too hard to be serious. L4D could also be interesting if done correctly. I would love to see a live-action pokemon movie just for the hell of it, because I think getting good CGI pokemon would make it worth seeing. I suppose a Zelda movie could work, as it is generally linear in nature. And then there's MGS, which is basically just a movie with some game parts thrown in already.
But really, I'm just waiting for a Firefly game.
