There are way more rings than that, and they’re actually the best parts of the game. It gets so much worse in the levels without rings. Awful combat, terrible puzzles, inconsistent framerate, and thoroughly unclear objectives.
Oh, and everyone’s favorite: escort missions!
There was a followup movie 6 years later, but as you can see from the audience score it wasn’t very good. None of the actors from the Tanner family came back for it.