Sonic CD

					
Game Cheats:
Unlock Tails:

Tails becomes unlocked as a playable character when you have beaten the game once.
Unlock D. A. Garden and Visual Mode:

These features become available when you have beaten the Level Time Trials in under 25 minutes.
Unlock Level Select:

This feature becomes available when you have beaten the Special Stage Time Trials in Under 5 minutes.
Unlock Sound Test:

This features becomes available when you have beaten the Special Stage Time Trials in under 4 minutes. 
Unlock Bonuses:

Enter the following codes to enable the corresponding effect.

Debug Mode:

Enter PCM12, DA11
Play Special Stage:

Enter PCM07, DA07
Displays Artwork:

Enter PCM03, DA01
More Artwork:

Enter PCM12, DA25
Sonic the Muscle Builder:

Enter PCM04, DA21
Revenge of the Mutant Artwork:

Enter PCM11, DA09 
Super Spin Dash:

Hold down on the D-pad and press the ‘Jump’ button so Sonic spins on the spot. When you release the D-pad Sonic will move forward in a speed determined by how long the D-pad was held and perform his Super Spin Attack which is handy when you need to gain a lot of momentum in a tight spot.
Creepy Anonymous Sonic Artwork:

On Android/IOS,if you enter the codes 12(left) and 25 (right),a confirmation sound effect will be heard and show a disturbing image of sonic and the following text saying
“Fun is Infinite”

“SEGA Enterprises”

“Majin”(for devil) or 《madin》