Like all of those PS2/GameCube era licensed games of like Rattatouille, etc. where the genre changes every chapter or so. It's essentially a collection of mini-games or half-baked games and doesn't have a fixed genre necessarily. Games like Sonic Adventure and the post-N64 James Bond games are kinda' like that too.
Is there not a term for this?
Variety games?
Most games based on movies are platformers like Super Mario Bros. I'm not familiar with Ratatouille but wikipedia calls it a platform game and the gameplay video I just watched seems to confirm (although it appears there may be a rhythm based minigame within).