Sonic 1 Remastered v2 is a likely fan-made ROM hack or remake of Sonic the Hedgehog for the Sega Genesis, representing an iteration on previous versions of the project. The original Sonic the Hedgehog was a landmark title released by Sega in 1991, famous for its high-speed platforming. As a 'Remastered' version, it focuses on enhancing the original game's visuals and audio quality.  The 'v2' indicates an update adding new features, bug fixes, or improved elements over previous versions.  This project originates from the efforts of independent developers.

Sonic 1 Remastered v2

Sonic 1 Redux