GENESIS
Sonic the Hedgehog
 ROM VARIATIONS
 Sonic the Hedgehog (North America/Europe)
 Sonic the Hedgehog (Japan)
 RELATED ROMS
 Sonic Special Stages (International)
 COMPILATIONS
 Mega Games 6-in-1, Volume 2 (Europe)
 Mega Games 10-in-1 (Latin America)
 Sega Classics 6-Pak (North America)
 Sonic Classics (North America/Europe)
 Telstar Multicart (Europe)
Sonic the Hedgehog 2
 ROM VARIATIONS
 Sonic the Hedgehog 2 (International)
 RELATED ROMS
 Sonic the Hedgehog 2 (Beta Version)
 Knuckles in Sonic the Hedgehog 2 (International)
 COMPILATIONS
 Sonic Classics (North America/Europe)
 Telstar Multicart (Europe)
Sonic the Hedgehog 3
 ROM VARIATIONS
 Sonic the Hedgehog 3 (North America/Europe)
 Sonic the Hedgehog 3 (Japan)
 RELATED ROMS
 Sonic 3 & Knuckles (International)
Sonic & Knuckles
 ROM VARIATIONS
 Sonic & Knuckles (International)
 RELATED ROMS
 Sonic Special Stages (International)
 Knuckles in Sonic the Hedgehog 2 (International)
 Sonic 3 & Knuckles (International)
Sonic CD
 ROM VARIATIONS
 Sonic CD (North America/Europe)
 Sonic CD (Japan)
 RELATED ROMS
 Sonic CD (Beta Version)
Sonic Spinball
 ROM VARIATIONS
 Sonic Spinball (North America)
 Sonic Spinball (Europe)
 Sonic Spinball (Japan)
 RELATED ROMS
 Sonic Spinball (Beta Version)
Sonic 3D Blast
 ROM VARIATIONS
 Sonic 3D Blast (International)
 RELATED ROMS
 Flicky (International)
 COMPILATIONS
 Classics Compilation (North America/Europe)
 Sega Top 5 (Latin America)
Knuckles Chaotix
 ROM VARIATIONS
 Knuckles Chaotix (North America/Japan)
 Knuckles Chaotix (Europe)
 RELATED ROMS
 Sonic Crackers (Alpha Version)
Dr. Robotnik's Mean Bean Machine
 ROM VARIATIONS
 Mean Bean Machine (North America/Europe)
 Puyo Puyo (Japan)
 RELATED ROMS
 Mean Bean Machine (Beta Version)
 Puyo Puyo 2 Expert (Japan)
 COMPILATIONS
 Sonic Classics (North America/Europe)

GAME GEAR
Sonic the Hedgehog
 ROM VARIATIONS
 Sonic the Hedgehog (International) (1991)
Sonic the Hedgehog 2
 ROM VARIATIONS
 Sonic the Hedgehog 2 (International) (1992)
 COMPILATIONS
 Sonic 2-in-1 (Europe) (1995)
Sonic Chaos
 ROM VARIATIONS
 Sonic Chaos (North America/Europe) (1993)
 Sonic & Tails (Japan) (1993)
Dr. Robotnik's Mean Bean Machine
 ROM VARIATIONS
 Mean Bean Machine (North America/Europe) (1993)
 Puyo Puyo (Japan) (1993)
 RELATED ROMS
 Nazo Puyo (Japan) (1993)
 Nazo Puyo 2 (Japan) (199?)
 Nazo Puyo Aruru No Ru (Japan) (199?)
 Puyo Puyo 2 (Japan) (1994)
Sonic Spinball
 ROM VARIATIONS
 Sonic Spinball (International) (1994)
 COMPILATION
 Sonic 2-in-1 (Europe) (1995)
Sonic Drift
 ROM VARIATIONS
 Sonic Drift (Japan) (1994)
Sonic Triple Trouble
 ROM VARIATIONS
 Sonic Triple Trouble (North America/Europe) (1994)
 Sonic & Tails 2 (Japan) (1994)
Sonic Drift 2
 ROM VARIATIONS
 Sonic Drift 2 (International) (1995)
 Sonic Drift 2 (1 Alternate) (International) (1995)
Tails' Sky Patrol
 ROM VARIATIONS
 Tails' Sky Patrol (Japan) (1995)
Tails' Adventure
 ROM VARIATIONS
 Tails' Adventure (International) (1995)
Sonic Labyrinth
 ROM VARIATIONS
 Sonic Labyrinth (International) (1995)
Sonic Blast
 ROM VARIATIONS
 Sonic Blast (International) (1996)

MASTER SYSTEM
Sonic the Hedgehog
 ROM VARIATIONS
 Sonic the Hedgehog (International) (1991)
Sonic the Hedgehog 2
 ROM VARIATIONS
 Sonic the Hedgehog 2 (International) (1992)
Sonic Chaos
 ROM VARIATIONS
 Sonic Chaos (North America/Europe) (1993?)
Dr. Robotnik's Mean Bean Machine
 ROM VARIATIONS
 Mean Bean Machine (North America) (1993?)
Sonic Spinball
 ROM VARIATIONS
 Sonic Spinball (Latin America) (1993?)
Sonic Blast
 ROM VARIATIONS
 Sonic Blast (Latin America) (1996/1997)

SYSTEM 32
Sonic the Arcade Game
 ROM SETS
 Sonic the Arcade Game (North America/Europe)
 SegaSonic the Arcade (Japan)

PICO
Sonic the Hedgehog's Gameworld
Tails and the Music Maker

SATURN
Sonic 3D Blast
 ROM VARIATIONS
 Sonic 3D Blast (International)
Sonic Jam
 ROM VARIATIONS
 Sonic Jam (International)
 RELATED ROMS
 Sonic World (International)
Sonic R
 ROM VARIATIONS
 Sonic R (International)

MODEL 2
Sonic Championship
 ROM SETS
 Sonic Championship (North America/Europe)
 Sonic the Fighters (Japan)

GAME.COM
Sonic Jam
 ROM VARIATIONS
 Sonic Jam (International)
Sonic R
 ROM VARIATIONS
 Sonic R (International)

NEO GEO POCKET
Sonic Pocket Adventure
 ROM VARIATIONS
 Sonic Pocket Adventure (International)

DREAMCAST
Sonic Adventure
 ROM VARIATIONS
 Sonic Adventure International (International) (1999)
 Sonic Adventure (Japan) (1998)
 RELATED ROMS
 Sonic Adventure (Trial Version)
 Sonic Adventure (Limited Edition)
Sonic Shuffle
Sonic Adventure 2
 RELATED ROMS
 Sonic Adventure 2 (Trial Version)

VISUAL MEMORY SYSTEM
Sonic Adventure
Sonic Shuffle
Sonic Adventure 2

JAVA 2 MICRO EDITION
Sonic Bomb Squad
Sonic Demo
Sonic Head On
Sonic Logic
Sonic J