: Players can still access a hidden Level Select and Debug Mode by using specific button combinations on the title screen or within the "No Save" menu.
: Unused text for "Hyper" and sprites for Super Emeralds indicate that Hyper Sonic, Tails, and Knuckles transformations were at one point considered, possibly tied to collecting emeralds in bonus stages. Cut Gameplay & Zones Unused Bosses : sonic-mania-game
For a deep dive into these technical leftovers, you can check community-driven archives like The Cutting Room Floor or Sonic Retro . : Players can still access a hidden Level
features unused star constellations in the shape of happy and sad masks. Hidden & Beta Elements sonic-mania-game