: The game files contain sprite sets from mobile ports of Sonic 1 , 2 , and a failed Sonic 3 port, which were used as testing tools during development.
features unused star constellations in the shape of happy and sad masks. Hidden & Beta Elements sonic-mania-game
contains several unused assets, including bouncing newspaper stacks and printing machines labeled "Sega SP500" as a potential nod to the SG-1000. : The game files contain sprite sets from
: Internally, the Lava Reef Zone boss area is referred to as "Act 3," and a corresponding title card sprite exists, suggesting some zones were originally planned to have more than two acts. Unused Objects : : Internally, the Lava Reef Zone boss area
: The game’s original working title was Sonic Discovery . Graphics for an early title screen with this name remain hidden within the game’s data.
: 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.