This 1993 Sonic CD game version is entirely remade for modern platforms based on a fanmade Retro engine rather than a straight port or an emulated title. The first version was launched for the SEGA CD and later ported to Windows. This version includes a slew of more platforms and a complete re-release for the Windows platform.
It has many changes and additions, such as an actual 16:9 aspect ratio (rather than the stretched 4:3 used in other Sonic game ports), the ability to choose between Japanese/European and American soundtracks, a constant framerate of 60 frames per second, several bug fixes, the ability to choose between the original CD’s Spin Dash or the Sonic 2 Spin Dash, and the inclusion of Tails (with his Sonic 3 abilities) as an unlockable character.
Leaderboards have been added to the game’s Single Player and Time Attack modes. It also restores the original game’s bonus modes, D.A. Garden and Visual Mode, and the Sound Test and Stage Select modes as unlockables, unlike the original, which required a cheat code to access.
