This Game Gear port of the Sega Master System version makes some changes to emerald locations and bosses.
Sonic the Hedgehog
1991
Sonic the Hedgehog 2
1992
Sonic the Hedgehog 2
1992
Sonic CD
1993
Sonic the Hedgehog Chaos
1993
Sonic the Hedgehog: Spinball
1993
Dr. Robotnik's Mean Bean Machine
Remake · 1993
Sonic the Hedgehog 3
1994
Sonic & Knuckles
Standalone expansion · 1994
Knuckles' Chaotix
1995
Sonic Labyrinth
1995
Sonic Blast
1996
Sonic 3D Blast
1996
Sonic R
Remaster · 1998
Sonic Battle
2003
Sonic Heroes
2003
Shadow the Hedgehog
2005
Sonic the Hedgehog
2006
Sonic Chronicles: The Dark Brotherhood
2008
Sonic Unleashed
2008
Sonic the Hedgehog 4: Episode I
2010
Sonic Colors
2010
Sonic Generations
2011
Sonic CD
Remaster · 2011
Sonic the Hedgehog 4: Episode II
2012
Sonic the Fighters
Remaster · 2012
Sonic Lost World
2013
Sonic Mania
2017
Sonic Frontiers
2022
The Murder of Sonic the Hedgehog
2023
