1 - Sonic Mania
Released on Aug 15th 2017
2 - Sonic CD
Platforms:
PC (Microsoft Windows), PlayStation 4, Xbox One, Nintendo Switch, PlayStation 5, Xbox Series X|S, PlayStation 3, Android, iOS, Linux, Xbox 360, Ouya, Windows Phone, Amazon Fire TV
Released on Dec 14th 2011
3 - Sonic Mania: Collector's Edition
Released on Aug 15th 2017