The .z64 file is a N64 ROM file format, typically played using an emulator like Project64 or via a flash cart on original hardware.
Instead of Peach's Castle, the hub world is Mario's ship, the Odyssey . Mario Odyssey 64.z64
Watch these gameplay videos to see the possession mechanics and 64-bit kingdom recreations in action: Super Mario Odyssey 64 - Full Game 100% Walkthrough YouTube · BeardBear the hub world is Mario's ship
In a major departure from the original Mario 64 , collecting a Power Moon does not kick you out of the level, allowing for continuous exploration. allowing for continuous exploration.