Sonic the Hedgehog Timeline 1991 - 1995

1991:
Sonic the Hedgehog - Sega Mega Drive - 16 Bits
Sonic the Hedgehog - Sega Game Gear - 8 Bits

1992:
Sonic the Hedgehog 2 - Sega Mega Drive - 16 Bits
Sonic the Hedgehog 2 - Sega Game Gear - 8 Bits

1993:
Sonic Spinball - Sega Mega Drive
Dr. Robotnik's Mean Bean Machine - Sega Genesis
Sonic the Hedgehog CD - Sega CD
Sonic Chaos - Sega Game Gear

1994:
Sonic the Hedgehog 3 - Sega Mega Drive
Sonic the Hedgehog Triple Trouble - Sega Game Gear
Sonic X-treme - Sega Saturn
Wacky Worlds - Sega Genesis
Sonic & Knuckles - Sega Mega Drive
Sonic Drift - Sega Game Gear

1995:
Knuckles Chaotix - Sega 32X
Sonic Classics - Sega Genesis
Sonic Compilation - Sega Mega Drive
Sonic Drift 2 - Sega Game Gear
Sonic Labyrinth - Sega Game Gear
Tails Adventure - Sega Game Gear