Sister Sonic was a Mega-CD RPG with a "flirtatious and sexy" female hedgehog
Sega and Nihon Falcom were at one point working on a Sonic RPG for the Mega-CD console, featuring a “flirtatious and sexy” female hedgehog.
The project was known as Sister Sonic, though the character wouldn’t have actually been Sonic’s sister but a long lost relative and “more mature girl” with “sexy charm”. No footage of the game exists.
Though the game was previously rumoured, YouTube channel DidYouKnowGaming has unveiled the truth behind its development.
Sister Sonic was actually planned to be a full remake of the PC-88 action-RPG Popful Mail by developer Nihon Falcom for Japan. Rather than just port the original game, the lead character would have been swapped for a female hedgehog to appeal to Sega fans.