One of the universal truths in life is that movies based on video games will never work, and it's a lesson Disney learned well with their attempt at adapting PRINCE OF PERSIA: THE SANDS OF TIME. It's hard to pinpoint exactly where they went wrong first, but somewhere between not really thinking the plot through and casting all white actors in a movie set in Persia and about Persian royalty is probably a good guess. That's not to say there's nothing of value here - Jake Gyllenhaal dipping his ripped toes into the role of an action hero, Alfred Molina's ostriches, and...erm, parkour I guess; are all pretty great. But the rest sort of slips by, like to many grains of sand.