Sonic Outerland

Sonic Outerland, also known as Project New Age, was a cancelled Sonic game for the Sega Saturn, seemingly developed in 1996, predating Sonic X-Treme. It would have had it's own website, Outerland.com, but this website was either never made or no longer exists. The game may have been rebranded into Sonic X-Treme, or scrapped in favor of X-Treme.

Description
It is unknown if Sonic Outerland would have been fully 3D or instead be similar to Sonic X-Treme, but it is known the game would have been in 3D, making it the first 3D sonic game. The only known levels are supposedly a circus and factory. It is unknown what the gameplay itself would be like. It would have utilized the cancelled Sega Net service, though it is currently unknown what the service would have been used for in the game.

Sonic Outerland Youtube Channel
A Youtube channel called SONIC Outerland Archive has created several videos documenting Sonic Outerland as well as Sega Net. This section will only cover videos related to Sonic Outerland and not Sega Net.

Music Files
Music Files is the first video uploaded by Sonic Outerland Archive. It has a piece of promotional artwork for Sonic Outerland in the background, as well as 2 music tracks: "Boss.wav", which appears to be a boss theme, and "NET_HUB.wav", which appears to be for the Sega Net menu. Whether or not it's for Sega Net itself or the Sega Net menu in Sonic Outerland is unknown.

Promotional Artwork Showcase
Promotional Artwork Showcase is the third video uploaded by Sonic Outerland Archive. It shows the same Sega Saturn Development Disk menu as the last video, but "LOAD: PROMO_ART_E.72" is selected. It then shows a loading screen, and several pieces of promotional artwork are shown. Some are seemingly render tests, with one being a reference sheet for Sonic's model, while others appear to be made for advertisement purposes. It also showcases the promotional artwork seen in the Music Files video. At the end of the video, text appears that states "PLEASE RESET THE CONSOLE."

Circus Zone Theme
Circus Zone Theme is the fourth video uploaded by Sonic Outerland Archive. It has a piece of promotional artwork in the background as a music track named "Circus.wav" is played. This is currently the only evidence that a circus level was planned.

Music Files 2
Music Files 2 is the fifth video uploaded by Sonic Outerland Archive. It has 2 pieces of promotional artwork in the background, and 2 pieces of music: "Options.wav", seemingly a theme for either the main menu or an options screen, and "Saturnopolis_Intro.wav", which appears to be the beginning music of a cutscene according to the name. Whether or not Saturnopolis is a level is unknown.

Factory Zone Theme
Factory Zone Theme is the sixth video uploaded by Sonic Outerland Archive. It shows an image of an Eggman model T-posing while "Scientist's Factory" plays.