A fan created an enhanced version of Sonic the Hedgehog 2 for the SEGA Master System
While Sonic the Hedgehog 2 on the Master System is considered a favorite by many, it never hurts to give the game a new coat of paint. An enhanced version of Sonic the Hedgehog 2 was created by user MrCat, which includes three new zones, remastered layouts, and artwork.
You can try out the game yourself by clicking here.
Via Indie Retro News