Sonic the Hedgehog Extreme

From Sonic Retro

Not to be confused with the similarily named Sonic X-treme.
SonicExtreme Xbox Title.png
Sonic the Hedgehog Extreme
System(s): Xbox
Developer: Vision Scape Interactive
Genre: Sports
Number of players: 1-2
State before cancellation: Partially-developed
Status of prototype(s): Prototype dumped

Sonic the Hedgehog Extreme is an unreleased Sonic the Hedgehog-themed hoverboarding game for the Xbox. A prototype of the game was found on an XDK development Xbox unit. This unit also had complete or partial versions of several non-Sonic-related prototypes. Information and videos on this game were released by its discoverer, ProtonX, on the 20th of April 2011.[1] The game may have been an early pitch demo which led to the development of Sonic Riders.


Both Sonic and Shadow are playable. The player must navigate the level while riding a hoverboard. It is possible to rotate the character while airborne, but landing incorrectly can result in the player falling off the board. It's possible to balance on the side of platforms, but when doing so a balance meter will appear and the player must keep from tipping. Rails can be found throughout the level. Turbo boost panels can be used to increase your speed temporarily.

When starting a game three gameplay modes appear: Mission, Combat, and Race. During the Mission portion the objective seems to be to find a key in each level to unlock the exit. The Combat mode is one or two players. In Combat mode collectable items can be found which may be used in battle against the opponent or to destroy crates. The items include grenades, firecrackers, homing rockets, and mines. The Combat mode area is small and has 4 sub-zones. The Race mode involves the player going along a seemingly endless track. It has been compared to the first level of Sonic Adventure 2: Battle.


The game contains a few music tracks from Sonic Adventure 2:

  • Chao Race Menu - Featured on Sonic the Hedgehog Extreme's menu
  • City Escape - Featured in Mission Mode and Combat Mode
  • Pumpkin Hill - Featured in the Battle Area



Sonic the Hedgehog Extreme was developed by Vision Scape Interactive as a game pitch to SEGA[2]. A similar game was eventually produced called Tech Deck: Bare Knuckle Grind. This game was also located on the same XDK development Xbox unit purchased by ProtonX, but, unlike Sonic the Hedgehog Extreme, Tech Deck: Bare Knuckle Grind saw an eventual release on Xbox and PC in 2005. Sonic the Hedgehog Extreme and the early build of Tech Deck: Bare Knuckle Grind are virtually the same game, seemingly featuring the same exact engines and similar level layouts.

The major differences between these two in-development games include an alternate Eminem/rap soundtrack, the main character models replaced with Tech Deck "Thumbs," and certain textures, such as those used for the breakable boxes, being replaced. The retrievable items within Tech Deck: Bare Knuckle Grind are primarily reflections of skateboard culture such as skateboard wheels and dollar signs, replacing the rings and chaos emeralds in Sonic the Hedgehog Extreme. The sound effects were also adjusted to be much more suitable for a Tech Deck game.


Technical information

ROM dump status

System Hash Size Build Date Source Comments
2003-05-27 XDK development unit Page

External links


Sonic the Hedgehog games for the following systems
 2003  Sonic Heroes     2004  Sonic Mega Collection Plus     2005  Shadow the Hedgehog | 2 in 1 Combo Pack: Sonic Heroes/Super Monkey Ball Deluxe | 2 in 1 Combo Pack: Sonic Mega Collection Plus/Super Monkey Ball Deluxe     2006  Sonic Riders    
Unreleased Sonic the Hedgehog games
Sega Master System
Sonic's Edusoft | Sonic the Hedgehog (home computers) |
Sega Mega-CD
Sonic the Hedgehog |
Sega Mega-CD
Sonic the Hedgehog 2 CD |
SegaSonic Bros. |
Sega Mega-CD
Sister Sonic |
Sega Mega Drive
Treasure Tails |
Pre-May 1993 Sonic arcade games |
Sega Mega Drive
Sonic the Hedgehog 3 Limited Edition |
Sega 32X
Sonic Sports |
Sonic Ride |
Sega Saturn
Sonic Saturn |
Game Boy Advance
Sonic X: Chaos Emerald Chaos |
Nintendo DS
Sonic DS |
Sonic the Hedgehog Extreme |
Game Boy Advance
Sonic Riders | Sonic the Hedgehog: Awakening |
Google Android OS
Sonic Central |
Google Android OS
Sonic Demo
Sonic X-treme incarnations
Sega 32X
Sonic Mars |
Sega Saturn
Sonic X-treme (Point Of View | Project Condor | SonicPC)