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Unused strings relating to animations from Sonic the Hedgehog CD, with two of them having frames. The Super Peel Out is just like from Sonic the Hedgehog CD, except Tails uses his fast run animation while Knuckles has nothing. For the Corkscrew H animation, Sonic and Knuckles' versions use seemingly random parts of their sprite sheets but the animation values are actually from one of Christian Whitehead's previous fan game projects. As for Tails, his sprite sheet is just blank.
Including the animantions just mentioned, the unused strings include:
Bored!
Super Peel Out
Sliding
CorkScrew H
Corkscrew V
Unused sprites[]
Special Stage[]
Artwork
Name
Description
Zone icons
The Zone icons for Zones 1-6 are found in the original game, but the one for "Zone 7" is entirely new.
1-up Icon
The Sonic 1-Up icon is still present in the final game, but it also has Tails and Knuckles icons along with it.
"W" Icon
A "W" icon from the original game. It does nothing.
Breaking it plays the sparkle sound effect from Sonic the Hedgehog 2 for Super Sonic and toggles the maximum Chaos Emerald count.
Exclamation Monitor
The only monitor that is not used in Debug Mode.
Zone specific[]
Sprite
Name
Zone
Description
Checkered ball
Green Hill Zone
Can be placed in Debug Mode, but it is more functional than before. It breaks through walls, deflects projectiles, and crushes enemies when pushed into them.
Splats
Green Hill Zone
The unused Badnik from the original game. When placed in-game, it will hop around near of where the player placed it or in a set direction.
Totem pole faces
Green Hill Zone
Two totem pole faces
Underground tiles
Green Hill Zone
Unused tiles for the underground segments of Green Hill Zone.
Horizontal Spikes
Marble Zone
Replaced with the vertical ones actually used, they are also slightly thinner. They still fully work upon placement.
UFO spawner
Marble Zone
Placing this in Debug Mode will cause UFOs to appear in the sky, which were seen in early versions of the game.
Sonic wearing goggles
Labyrinth Zone
Sonic will wear these if a Goggles Monitor is broken and it will increase the amount of time he can spend underwater without air.
Robotnik's mech's legs
Final Zone
The left image shows the back of Robotnik's legs, which cannot be seen normally. The right image is what is normally seen in the final game.