a b Bradford, Matt (May 3, 2011). "Unreleased Sonic skateboarding game discovered on Xbox development unit". GamesRadar. Archived from the original on March 7, 2016 . Retrieved May 1, 2018. IGN Staff (September 7, 2005). "Sonic Goes eXtreme". IGN. Archived from the original on October 1, 2016 . Retrieved April 30, 2018. a b c d e f g Frank, Allegra (May 8, 2017). "Sonic the Hedgehog's abandoned skateboarding game surfaces". Polygon. Archived from the original on May 2, 2018 . Retrieved April 29, 2018.

Snowboarding however Sonic has done, as we see later in the trailer, albeit it briefly at the start of a level in Sonic the Hedgehog 3. The Chaos Emerald Sonic Extreme was publicly revealed in May 2011, when a YouTube user, "ProtonX3", released videos demonstrating the environments and modes. [7] [8] The footage was poorly received by video game journalists. Game Informer and VG247 thought Sonic Extreme looked "predictably" and "compellingly" awful, respectively, [9] [10] and GamesRadar joked it "prov[ed] once again that slapping the word 'extreme' onto any popular franchise, activity or consumer good is a surefire way to guarantee that it will be anything but." [8] The game also elicited commentary on Sega's quality control process; Game Informer and Computer and Video Games expressed relief that it was never released, but questioned why Sega had continued to release other poorly-received Sonic games, such as Shadow the Hedgehog, Sonic Riders and its sequels, and Sonic the Hedgehog (2006). [9] [11] Sonic Extreme was a prototype video game created by Vision Scape Interactive in May 2003. Proposed as a spin-off to Sega's Sonic the Hedgehog series, Sonic Extreme featured Sonic and Shadow riding hoverboards in a Green Hill Zone-themed open world, with gameplay likened to Tony Hawk's Pro Skater. It featured three gameplay modes, which included searching for keys and Chaos Emeralds and fighting or racing another player. Vision Scape created the prototype while it made cutscenes for Sonic Heroes (2003); it was developed on the Xbox with intent to port it to the GameCube and PlayStation 2. The prototype was assembled using the RenderWare game engine and assets from prior Vision Scape and Sonic games. The Sonic Speed RC is approximately 1:5 scale, with design inspired by the movie. The removable Sonic the Hedgehog toys are over 6-inches tall and have 13 points of articulation for awesome poses! With a range of 100 feet, the RC works best on flat and smooth surfaces. It uses a 2.4GHz frequency.Mitchell, Richard (May 2, 2011). "Footage of canceled 'Sonic Extreme' hoverboarding game". Engadget. Archived from the original on September 20, 2017 . Retrieved May 1, 2018. a b c d e f Makuch, Eddie (May 7, 2017). "More Details And Footage Of The Canceled Sonic Skateboard Game Emerge". GameSpot. Archived from the original on May 2, 2018 . Retrieved May 1, 2018. Recreate the action from the Sonic the Hedgehog 2 movie as Sonic races to save the world and confront Robotnik! These remote control Sonic the Hedgehog toys include a 15.24cm scale detachable Sonic figure, RC rider, and ring controller. The Sonic Speed RC controller is inspired by Sonic’s rings from the movie and has three buttons for total control. go forward, turn and 360-degree spins, and Turbo mode that lights the wheels up for that extra boost! a b c d e Campbell, Evan (May 8, 2017). "Canceled Sonic Hoverboard Game, Sonic Extreme Revealed". IGN. Archived from the original on May 2, 2018 . Retrieved April 29, 2018.

a b c d e f Hulfish, Garret (May 8, 2017). "Previously unknown Sonic skateboarding game has been revealed in video". Digital Trends. Archived from the original on September 20, 2017 . Retrieved April 30, 2018. Vision Scape showed Sonic Extreme to Sonic Team head Yuji Naka, who was impressed and asked for a software design description to be submitted to Sega. However, Sega never responded to Vision Scape after the document was turned in. While the game never came to fruition, it may have served as the basis for Sonic Team's Sonic Riders (2006), which features similar gameplay concepts. The Extreme prototype publicly surfaced in May 2011, when gameplay footage was uploaded to YouTube. Journalists reacted negatively and expressed relief it was never released. The gameplay is similar to that of the Special Stages found in Sonic the Hedgehog 2 and Sonic the Hedgehog 4: Episode II. a b J. Seppala, Timothy (May 8, 2017). " 'Sonic Riders' may have been (legally) plagiarized". Engadget. Archived from the original on May 2, 2018 . Retrieved May 1, 2018. Hillier, Brenna (May 1, 2011). "Rumour: Shelved Sonic game footage turns up". VG247. Archived from the original on May 22, 2018 . Retrieved May 1, 2018.