Submitted by: Unknown

This is fairly similar to the final game, but the design is a little different. There is a higher roof at this point in the final, but goes down to this level further on.

Submitted by: Jan Abaza & Dr. Eggfan

All of these little pieces of data are missing pieces from the Underground Zone. The alternate bricks at the top are not in the final game, and neither are the smaller bits of molten rock.

Submitted by: Eggfan

Underground Zone at one point has a loop in it, along with some floating platforms. Neither are found in the final game.

Submitted by: Eggfan

This is the Arijigoku Mecha boss of the Underground Zone. Usually in the game just his face is viewable out of a hole in the ground, but this shows that he had a bit of a body as well. He could have possibly rose from the ground at some point.

Submitted by: Tux / Rlan

When some Game Gear games were being tested, they would be shown on an SMS, despite the difference in screen size. The emulator eSMS allows this SMS mode, which allows you to see the Arijigoku Mecha's body. So the body bit would have probably been so it didn't look so odd in the testing process, or if they decided to change the camera.

Submitted by: Green Gibbon!

For comparison, this is the look of the boss battle on the Master System.