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Video Game / Sonic X-treme

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The Sonic game which never was.

If you ever wondered why Sega never made a mainline Sonic game for the entire lifespan of the Sega Saturn, the answer is that they did. It was just never finished.

Originally intended for the 32X under the codename Sonic Mars, Sonic X-treme was a Platform Game developed by Sega Technical Institute. Intended to be the franchise's big transition from 2D to 3D gameplay, the game began production in late 1994 before being unceremoniously cancelled in '97.

Following the release of Sonic 3 & Knuckles, series co-creator Yuji Naka and the Japanese staff at STI returned to Japan, while all the other members of Sonic Team remained in the U.S. While Naka and co. were off making NiGHTS into Dreams..., the Americans were assigned to make a new Sonic game.

What exactly the plot would entail changed a lot throughout development: It was originally conceived as taking place in the same continuity as the cult Sonic the Hedgehog (SatAM) cartoon on which the Archie comic book series was based, along with popular Canon Foreigners like Princess Sally and the Freedom Fighters, but Sega nixed that idea. (Sally and the gang had blink-and-you'll-miss-it cameos in Sonic Spinball in '93, along with characters from Adventures of Sonic the Hedgehog which ran parallel to Sat AM.) Other ideas ranged from Sonic battling demons who were sealed in the Master Emerald (a kernel of this idea made it into Sonic Adventure in '98) to him trying to make it to a hot date with Tiara Boobowski, a Manx cat whose status also varied in development. Many of these pitches involved playing as Tails and Knuckles, plus the new addition Tiara. But as the production shifted to the Saturn, it was agreed that Sonic should be the sole playable character in order to keep things simple.


Sonic X-treme was planned to have two gameplay modes. Standard levels would have a fisheye camera known as the "Reflex Lens" which made levels appear as though they were moving around Sonic. Levels would also rotate around a fixed center of gravity as though they were small planetoids, allowing Sonic to run up walls and ceilings. If this sounds familiar, some of those ideas were realized in the largely-forgotten Sonic Lost World 17 years later. Meanwhile, boss stages were free-roaming, with the boss fights themselves fixing the camera on an enemy in the middle of the arena, and Sonic running rings around them.

So what led to the game's cancellation? Basically, the dev team split into two (Team A and Team B), which is always a mistake. One team would concentrate on action stages and the other on boss stages. Team A's engine for the action stages ran great on computers, but struggled on the Saturn's hardware. They managed to get it working decently, but the team members who were supposed to demo it were just seconds late to a meeting held with CEO Hayao Nakayama in March '96. Team A ended up demo'ing the beta version to Nakayama, who demanded that all of their inferior work be scrapped and the entire game be done in the style of the boss stages. And to get the game done by Christmas to compete with Super Mario 64.


Depending on who you ask, Team B's attempts to make this happen either compelled them to steal the engine from NiGHTS or create content that looked very similar to it; regardless, Yuji Naka saw this version of the game, went bananas and threatened to quit Sega if Team B's engine wasn't scrapped entirely. The stress of having to complete a game from absolute scratch in only a few months made the project head, Chris Senn, contract pneumonia. Told that he would only have six months to live if he kept working at his current pace, he left the project and the game as a whole was cancelled, as it could no longer release by the holiday season. With no 3D Sonic to speak of, Sega decided to port over Sonic 3D: Flickies' Island in its stead.

Watch the 4worlds demo footage here and the hilariously ironic commercial here. For more detail on the game's development, see the three-part video series by YouTuber miiyouandmii2, and Sonic Retro's comprehensive guide which includes characters, stories, scripts, and artwork.

As a sidenote, this game was at one point meant as a tie-in for a proposed live-action film called Sonic the Hedgehog: Wonders of the World. The plot of the movie would have involved Sonic and Robotnik escaping from Sonic X-treme into the real world. Additionally, a christmas episode of the Adventures of Sonic the Hedgehog cartoon was to be titled "An X-Tremely Sonic Christmas" in order to promote it. However, despite the game's cancellation, the christmas episode thankfully wasn’t canceled, but was rather renamed to "Sonic Christmas Blast", most likely to tie in with the aforementioned Sonic 3D port (whose U.S. title is Sonic 3D Blast) instead.

This game provides examples of:

  • 2½D: The game uses 2D sprites on a 3D plane. This element eventually came to a detriment of the title: the Saturn was designed for 2D games and Sonic X-treme was an early 3D platformer, however Mario 64 changed the whole paradigm. Sonic X-treme didn't look that technologically impressive when compared to its rival Mario or other 3D platformers. Attempts to fix this by making X-Treme more 3D failed. Also, when Tiara was still planned to be playable, her gameplay would've been the much more standard "character walks through 3D plain on a 2D rail.
  • Attack of the 50-Foot Whatever:
    • At one point in development, Nack the Weasel/Fang the Sniper was to be fought as a supersized boss.
    • All the bosses were unusually sized in order to help gamers new to 3D games defeat them more easily.
  • Distaff Counterpart: Tiara was designed as being "Sonic, but female".
  • Furry Female Mane: Tiara was initially designed during the SatAM-based Sonic Mars stage of development and, as a result, she's styled similarly to female characters from the show. She had either loose, long hair or a ponytail depending on her design (with her later designs all using the Tomboyish Ponytail look).
  • Gratuitous Princess: One story treatment had Tiara as the princess of a cyber world.
  • Green Hill Zone: Jade Gully fit the series tradition of having the first level be a tropical level.
  • Inside a Computer System: One draft of the story involved Princess Tiara and her father, King Cyberooski, being trapped in a virtual world.
  • Make Way for the New Villains: Two story drafts would have had Robotnik usurped as the main villain by ChaosDoom and the Chaos Elementals.
  • Promoted to Playable: If the game had gotten finished, it could have been Amy's first playable role in a main game. Plans for other character besides Sonic existed, but it was decided to focus on Sonic until everything was perfected.
  • Race Against the Clock: One of the many proposed plotlines for the game would've involved Sonic having to find the antidote to the Doomvirus, a deadly super-virus, which he himself has contracted. According to project head Chris Senn, there was to be a mechanic where the player needed to complete the game in a certain amount of time before Sonic succumbs to the illness.
  • Slippy-Slidey Ice World: Crystal Frost is a zone that takes place on a snowy mountain.
  • Take That!: A live-action E3 promotional video features Mario and Luigi of Super Mario Bros. fame worrying about Sonic's next title. It even ends with the tagline "Mario Who?", implying gamers will forget all about Mario.


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