Megadrive

Sonic The Hedgehog

Sonic The Hedgehog 2

Sonic The Hedgehog 3

Sonic & Knuckles

Sonic Spinball

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
Sonic Triple Trouble
Mean Bean Machine
Sonic Labyrinth
Sonic Blast
Sonic Drift
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
Sonic Shuffle
Phantasy Star online/V2
Chu Chu Rocket
Samba De Amigo
 
Gamecube
Sonic Adventure 2: Battle
Sonic Mega Collection
Sonic Adventure DX
Sonic Heroes (Multi)

Billy Hatcher

PSO Episode 1&2
PSO Episode 3
Sonic Gems Collection
Sonic Riders
 
Playstation 2
Astro Boy
SEGA Superstars
Phantasy Star Universe
Shadow The Hedgehog
(multi)
 
Gameboy Advance
Sonic Advance
Sonic Advance 2
Sonic Advance 3
Sonic Pinball Party
Sonic Battle
 
Nintendo DS
Puyo Pop Fever
Feel the Magic XX / XY
Rub Rabbits!!
Sonic Rush
 
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
 
 
Missing Sprites

Submitted by: Dr. Ivo, Robert Flory

These screws were found in the game data, one is used in the background from Metropolis Zone, the other is not.

Submitted by: Scott Prower, Rlan

These 7 animations were found deep within Sonic 2, showing Sonic sitting down with disappointment, looking towards the screen, and pulling. These are never used, not even in the BETA. The first 4 animations look like something from a waiting animation, while the pulling looks like there may have been puzzle elements [Possibly in Hill Top Zone's lava areas]

Submitted by: Esrael

This is a missing ledge animation found in the game. It's different from both Sonic 1 and 2, and didn't find it's way in any shape or form into the final.

Submitted by: IceKnight

By altering animation frame values, IceKnight was able to find these two animations, situated after the Walking and Running animations. It is assumed that these were used when Sonic would start going very fast.

Submitted by: Unknown

This spring monitor never made it to the final game. It probably would have either made Sonic's jump higher for a brief period, or work like Sonic Triple Troubles powerup, which straps a spring underneath Sonic's feet.

This lamp post can be seen in the debug mode of S2B. It's very different to the final one, almost futuristic.

Submitted by: Knuckles Prowers

This was an alternate 'hit' animation for Eggman in Chemical Plant Zone. At one point, Eggman would dose himself in the Blue goop when hit.