I'm not much of a video game player at all, so I didn't recognize every last one of the cameos and guest appearances in here. Ralph and Felix are obvious amalgams of "Donkey Kong" and there is a definite bit of my favorite game "Rampage" in their appearance as well. heck, some of the graphics are right out of "Rampage"! I hear they are making a movie out of that, too.
the actors all do a good job, and even at 108 minutes it doesn't seem too padded there's even a romance sub plot (OK, that one I didn't see coming). I'd recommend it, overall.