Sonic CD Cheats, Codes, and Secret…
https://gamefaqs.gamespot.com/segacd/587997-sonic-cd/cheats
PCM 03 DA 01: This code will give you an image of Sonic, Metal Sonic and Dr.Eggman/Robotnik at a disco party. PCM 11 DA 09: This code will show a cute looking Sonic picture. PCM 04 DA 21: This code will play the "Batman" Sonic sound. PCM 32 DA 08: This code will show the new Dusty Desert Concept Art.
PCM 03 DA 01: This code will give you an image of Sonic, Metal Sonic and Dr.Eggman/Robotnik at a disco party.
PCM 11 DA 09: This code will show a cute looking Sonic picture.
PCM 04 DA 21: This code will play the "Batman" Sonic sound.
PCM 32 DA 08: This code will show the new Dusty Desert Concept Art.
DA: 4 PA: 50 MOZ Rank: 18