Sonic 1 - The Ring Ride 3 is likely the third installment in a series of ROM hacks based on the original Sonic the Hedgehog for Sega Genesis, continuing the focus on ring-collection-based challenges and innovative level design. The original Sonic the Hedgehog (1991) by Sega makes ring collection a core gameplay element, providing the foundation for these hacks.  This ROM hack continues building upon the previous installments, perhaps introducing even more complex levels or challenges associated with collecting rings.  Further details on the creator or specifics can be found within ROM hacking online communities.

Sonic 1 - The Ring Ride 3

Sonic 1 - The Next Level