In 2008, an unofficial, high-definition remake was announced titled "Sonic the Hedgehog 2 HD", which included development members who would later work on "Sonic Mania". In 2012, it was reported that a potential keylogger was included with an alpha build of the game, which led to the project being discontinued due to the controversy. In 2014, the project was restarted under a new development team. The final version is planned to feature additional stages and the option to play levels as Knuckles the Echidna.