Cheat Codes Discovered In Sonic Mania Plus - Siliconera

It turns out that Sonic Mania Plus has hidden cheat codes that are usable through the level select menu, including making Sonic have all three special moves, infinite continues, and disabling Super Sonic music.

Steam Community :: Guide :: Sonic Mania Plus Secrets & Cheat Codes

Sonic Mania Plus, UNLOCK EVERYTHING CHEAT! Debug Mode, All Medals + More!

Cheat Codes Discovered In Sonic Mania Plus - Siliconera

Cheats and Secrets - Sonic Mania Guide - IGN

Here's Cheat Codes Discovered For Sonic Mania - My Nintendo News

Sonic Mania cheats: Level Select, Debug mode, Super Peel Out, and other secrets explained

Sega - Sonic The Hedgehog., Page 12

Steam Community :: Guide :: Sonic Mania Plus Secrets & Cheat Codes

Sonic Mania Plus, Sonic Wiki Zone