Sonic 1 Pink Edition is a ROM hack that primarily alters Sonic 1's visual appearance. The most notable change would be a shift in color palettes, predominantly using shades of pink.  It's likely an aesthetic change with minimal impact on the core gameplay mechanics. Expect the levels and enemy placements to be largely unchanged from the original Sonic 1, but with a dramatically altered color scheme, giving it a unique visual identity. The creator is likely an independent ROM hacker, showcasing creative flair.

Sonic 1 Pink Edition

Sonic 1 Open World Experiment