Sonic the Hedgehog Triple Trouble/Development

Sonic Triple Trouble has gone through several changes over its development process. There are several rejected ideas, sprites, and other things that were left on the cutting room floor. The following details several of these things.

Early Game Design

Bonus Round

Plane is missing.

Great Turquoise Zone

This area is quite different.
Peelout with yellow trail. Different level graphics and color. The enemy is also darker in color.
A different peelout animation again and different level graphics.
Nack in Great Turquoise Zone, just before a hill.
Here he is again, but this time...
...Nack pulls out a gun. He doesn't do any of this in the final game.
A section of an earlier map.