Sonic SNES Games
Sonic did not receive an official Super Nintendo release during the original 16-bit console era. Sega and Nintendo were direct competitors, so the main Sonic series remained on Sega hardware.
Over time, however, unofficial Sonic-themed hacks and bootlegs appeared for the SNES. One famous example commonly known as Sonic the Hedgehog 4 was based on Speedy Gonzales: Los Gatos Bandidos with altered graphics. These games are unofficial curiosities rather than genuine Sega releases.