The secrets never stop in Sonic Mania Plus. Access Sound Test Mode, and you can actually activate some crazy, cool cheat codes. Here's how it works.

This page contains a list of cheats, codes, Easter eggs, tips, and other secrets for Sonic CD for Sega CD. If you've discovered a cheat you'd like to ...

This page contains a list of cheats, codes, Easter eggs, tips, and other secrets for Sonic CD for PlayStation 3. If you've discovered a cheat you'd ...