http://www.rottentomatoes.com/m/prince_of_persia_sands_of_time/
Personally I don't think it's going to be the video game movie to finally break free from mediocrity. But it will review better than most. I think it will achieve a credible 40-59% but still fall into the rotten category. If it lives in that territory then I think fans of the game / gaming should like it well enough and I for one plan to see it unless it reviews particularly badly.
I find Rotten Tomatoes a pretty good benchmark for determining whether I should pay the money to see a movie in theatres. However you have to adjust for genre. So I normally adjust VG movies up by about 20% to detemine whether they're worth seeing at the cinema. So if PoP gets above 40% it'll be worth my while. If it gets less than 30% it won't be worth the parking fee, let alone the ticket price.
“The fundamental cause of the trouble is that in the modern world the stupid are cocksure while the intelligent are full of doubt.” - Bertrand Russell
"When the power of love overcomes the love of power, the world will know peace."
Jimi Hendrix