Taken from the Red Shoe Diaries, this concept sketch of the 'Cappy' robot shows a rough image of what it should look like, how how it reacts, along with a final sketch.

This is 'Flamedome' concept art. It's action is to open up and shoot out bullets as soon as Sonic comes close.

Slight remakes of the 'Gyro' badnik, until it came down to the final model. Not much is different except for some thinning down and losing the top and bottom of him.

Concept art of 'Jeta' and 'Trilldrill'. These are the final sketches, since they're very close to the final models.

These are wireframe models of Trilldrill, Jeta, and Gyro. They are filled with Polygons since they were to be turned into sprites anyhow.

Amd here are the full models, textured and ready to go for the final game.

A few shots of a Wireframe model of Sonic, showing off the many polygons used.

This character was meant to be called Tiara Boobowski, the Daughter of Professor Gazebo Boobowski who was either the creator or keeper of rings. Tiara was basically meant to be Sonic's love interest, or just another Amy Rose.

Click the image for a larger version.

This creation, created by Chris Senn, was meant to be Metal Sonic Mach 3 for the game Sonic X-Treme. He created this concept art which ended up being scrapped, and was added to his online scrapbook at www.senntient.com Besides not looking anything like Metal Sonic, he also has no hands, instead are drills or missiled in their place.

Also given by Chris Senn to the community, the drafts for how the Trunkbot was created. From having legs and a mace for a trunk to more of a spring shape and a shooter. Click the image for the entire image.

Submitted by: Joel Silver

Discovered on the internet by Blaze, this concept of the title cards was found. It show a pyramid-like background with the 'Giza Speedway' spinning into view. What the Giza Speedway is is uknown. For a larger version, click the image to the right.

Submitted by: Joel Silver

Here is a colour image of what it might have looked like, from the last panel

Submitted by: Joel Silver

Another sketching of the beginning movies for the game, showing the logo exploding into the screen. Click the image for a larger version.