Speaking of which @stephec, I watched Iron Lung this afternoon (which is based on a game).
At just over 2 hours, it seriously stretched even my patience at times. Didn't help that it's essentially watching one guy in a submarine for the whole time.
If they'd cut it down to 90 minutes it would probably feel as tight and enjoyable as the best submarine based films, but the first half really was a slog.
That said, I'd still recommend it, because it's really well shot and goes with physical effects and props rather than CGI (mostly), which I'm always a fan of.
First half, 4/10, second, 7/10.
Two hours is about my limit if its a good film, speaking of iron though, I've got Iron Sky lined up again in the not too distant future, now that is quality trash.