Megadrive

Sonic The Hedgehog

Sonic The Hedgehog 2

Sonic The Hedgehog 3

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Sonic 3D: Flickies Island

Mean Bean Machine

Sonic The Hedgehog CD

Knuckles Chaotix

Sonic Compilation
Game Gear
Sonic The Hedgehog
Sonic The Hedgehog 2
Sonic Chaos
Sonic Spinball
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Mean Bean Machine
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Sonic Drift 2
Tails' Adventure
Tails' Skypatrol
 
Sega Saturn
NiGHTS Into Dreams...
Burning Rangers
Sonic R
Sonic Jam
Sonic 3D: Flickies Island
Christmas NiGHTS
 
Dreamcast
Sonic Adventure
Sonic Adventure 2
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Chu Chu Rocket
Samba De Amigo
 
Gamecube
Sonic Adventure 2: Battle
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Sonic Heroes (Multi)

Billy Hatcher

PSO Episode 1&2
PSO Episode 3
Sonic Gems Collection
Sonic Riders
 
Playstation 2
Astro Boy
SEGA Superstars
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Shadow The Hedgehog
(multi)
 
Gameboy Advance
Sonic Advance
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Nintendo DS
Puyo Pop Fever
Feel the Magic XX / XY
Rub Rabbits!!
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NGPC
Sonic Pocket Adventure
 
N-Gage
SonicN
 
Game.com

Sonic Jam Game.com

 
Arcade
Sonic The Fighters
SEGASonic Arcade
 
Megadrive
Sonic The Hedgehog 2

Sonic The Hedgehog 3

Sonic Spinball
Sonic Crackers
Sonic CD v.510
Sonic CD v.712 & v.920
 
Game Gear
Sonic The Hedgehog
 
Sega Saturn
Sonic X-Treme
Sonic X-Treme 718
Sonic R: Trial Version
 
Dreamcast

Sonic Adventure 2: Trial

Sonic Adventure 2 Preview

 
Xbox

Sonic Heroes Alpha

Sonic Heroes E3 Demo

 
Xbox 360
Sonic Next-Gen
 
Gameboy Advance
Sonic Advance 3
 
Nintendo DS
Sonic DS - e3 Demo
 
Arcade
SEGASonic Arcade
 
Megadrive
Sonic The Hedgehog
Sonic The Hedgehog 2
Sonic The Hedgehog 3
Sonic & Knuckles
Sonic 3D: Flickies Island
Sonic Jam 6
 
Master System

Sonic Blast

 
Original Nintendo
Somari the Adventurer
Jurassic Boy 2
Family Kid
Sonic 3D Blast 5
Sonic 3D Blast 6
 
GameBoy/Advance
Jurassic Boy 2

Sonic 6

Sonic 3D Blast 5

Sonic Adventure 7

Sonic Advance
Sonic Advance 2
Sonic Advance 3

Sonic Pinball Party

Sonic Adventure 8
 
Super Nintendo

Sonic The Hedgehog 4

 
SoST Forum
FAQ
Time Capsule - SoStH
 
 
Prototype images

Submitted by: Andy Wolan

A prototype Sonic CD cover, with an Anime-esque Sonic on the front. The final US version uses much more US-Styled artwork, like the art on Sonic Spinball and Sonic 3.

Submitted by: ^Luck^

A very early title screen of the game, at one point called CD Sonic. This is the title of the prototype 510 of Sonic CD that we have, and would have been taken from that version.

Submitted by: Rlan

A later version of the title screen taken from a Prima guide of Sonic 3. Its very close to being finished, but they are half way done in going from the Sonic 1 styled clouds of the image above, to the Mode-7 styled one from the final, so no clouds are present.

Submitted by: Knuckles Prower

An early picture of the Eggman boss from the first level, complete with pincars instead of bumpers.

Submitted by: Hari Hari

This early image of Collision Chaos Zone shows off a early changes in the level. Firstly, both the Anton and Mosqui enemies do not appear in this level in the final product, they are replaced with the Mantis-Bots and Bat-Bots. Secondly, there seems to be a barrier around Sonic, which seems to appear because of the speed he's moving at. Also, when he is going at such a speed, he should be moved across to the left of the screen, not the right.

Submitted by: Rlan

As seen in the Sonic CD 510 page, this water is actually higher in the final game, but here it's quite low.