Kero Quest 64 is a Collectathon 3D Platformer inspired by other games in the genre, especially those from the late 90s. You take control of Kero, a blue frog seeking to stop a prince from abusing his newly gained powers by collecting Magical Shards around the kingdom.
I mean Super Mario 64 and Super Mario Odyssey really are a kind of collectathon too.
They just don’t push it to the extent of Rare’s stuff, and Odyssey in particular does a very good job of eliminating the tedious parts.