Sega mega drive:
Sonic the hedgehog
Sonic the hedgehog 2
Sonic the hedgehog 3
Sonic & knuckles
Sonic 3d blast
Sonic spinball
Dr. Robotnik's Mean Bean Machine
Game gear:
Sonic the hedgehog
sonic the hedgehog 2
Sonic chaos
Sonic triple trouble
Sonic blast
Mega cd:
Sonic cd
Neo Geo Pocket:
Sonic the Hedgehog Pocket Adventure
Game boy advance:
Sonic advance 1,2,3
Pc:
Sonic adventure dx