The only image in the Red Shoe Diaries of Galaxy Fortress.

This shows Sonic on a large number of small platforms, almost spider-like in shape. There appear to be floors Sonic could reach, and no background can really be seen [besides the purple haze in the far back]

This image is from the TGS Video. When played, it shows Sonic rolling around the orange squard continuously in 260 degrees. Perhaps he was only able to rotate on these modules?

Another oddity from the video, an open field for the level, but with basically nothing in it. probably used to just get Sonic running fast quickly. Again, no background.

Sonic races the the edge of the floating platform, with some sort of door shape in the backdrop. Some small steps seem to be leading up to the top of it.

Sonic is running up a large 45 degree ramp with ease. Those orange platforms seem to have become 5 or 6 sides shapes, maybe they were similar to the Scrap Brain cogs?

After running quickly up the ramp, Sonic is flung from the top. A Large maze of ramps are seen in the background, as well as 'Balldrom' robots.

Sonic jumps vertically down the same section from the previous image, but with a different camera angle. Possibly gravitational change?