From The Cutting Room Floor

SegaSonic the Hedgehog
Developer: Sonic Team, Sega AM3 Publisher: Sega Platform: Arcade (Sega System 32) Released in JP: June 1993 Released in US: September 1993 Released in EU: September 1993 This game has unused graphics.

Sonic the Hedgehog, Ray the Squirrel, and Mighty the Armadillo's only game together.

Unused Graphics

American Robotnik

Probably meant for the American release due to this sprite looking like Robotnik from SatAM.

The Sonic the Hedgehog series
Sega Genesis	Sonic the Hedgehog • Sonic the Hedgehog 2 (Prototypes) • Sonic the Hedgehog 3 • Sonic & Knuckles (Prototypes) Sonic 3 & Knuckles • Sonic 3D Blast (Prototypes) • Sonic Spinball (Prototype) Dr. Robotnik's Mean Bean Machine • Sonic Classics
Master System	Sonic the Hedgehog • Sonic the Hedgehog 2 • Sonic's Edusoft • Sonic Spinball • Sonic Blast Dr. Robotnik's Mean Bean Machine
Game Gear	Sonic the Hedgehog • Sonic the Hedgehog 2 • Sonic Chaos • Sonic Triple Trouble • Sonic Blast • Sonic Spinball Dr. Robotnik's Mean Bean Machine • Tails' Sky Patrol • Tails Adventures
Arcade	SegaSonic the Hedgehog • Sonic the Fighters
Sega CD	Sonic CD (Prototypes‎)
32X	Knuckles' Chaotix (Prototypes)
PC	Sonic & Knuckles Collection • Sonic 3D Blast • Sonic CD (1996, 2011) Sonic the Hedgehog 4: Episode II • Sonic Generations • Sonic Adventure DX • Sonic Adventure 2 • Sonic Heroes
Saturn	Sonic Jam
Dreamcast	Sonic Adventure • Sonic Adventure 2
Neo Geo Pocket Color	Sonic Pocket Adventure
GameCube	Sonic Adventure 2: Battle • Sonic Heroes (Prototypes) • Shadow the Hedgehog Sonic Mega Collection • Sonic Gems Collection
Game Boy Advance	Sonic Advance • Sonic Advance 2 • Sonic Advance 3 • Sonic the Hedgehog Genesis
PlayStation 2	Sonic Heroes
Xbox	Sonic Heroes
Nintendo DS	Sonic Rush (Prototype) • Sonic Chronicles: The Dark Brotherhood Sonic & SEGA All-Stars Racing
Wii	Sonic Colors • Mario & Sonic at the Olympic Games (2007, London 2012)
Xbox 360	Sonic the Hedgehog • Sonic Unleashed • Sonic Generations (Prototypes) • Sonic Adventure 2
PlayStation 3	Sonic Adventure 2
PSP	Sonic Rivals
J2ME	Sonic the Hedgehog Mobile • Sonic Jump
iOS	Sonic the Hedgehog (2013) • Sonic CD Sonic Jump