Meh. Could've & should've been better.
The writing wasn't all that (only ONE writer on a movie this important??), the colors were largely blown-out which detracted from what should've been an incredibly vibrant movie to look at and there wasn't nearly enough 'Nintendo' music. 90% of the movie is filled with generic 'movie soundtrack' music with only sporadic and short-lived nods to actual gameplay music. WHY??? The end credits had the best music in the entire movie because it (finally) stuck to Nintendo music!
I was really looking forward to this one but it disappointed. Glad I didn't pay for it! 6/10 and that's being nice.