Sonic Mania Cheats: Level Select Code, How to Collect Chaos

Sonic Mania is the game fans of the Blue Blur have been dreaming of for years. Rather than going down the modern route …

Level Select, Sonic Wiki Zone

Sonic Mania Cheats, Codes, Cheat Codes, Walkthrough, Guide, FAQ, Unlockables for Switch - Cheat Code Central

A Guide to 'Sonic The Hedgehog' Version 2.0's Hidden Level-select, Debug Mode, and Many More Secrets – TouchArcade

All Sonic Origins Cheat Codes

Sonic Mania Cheats: Level Select Code, How to Collect Chaos Emeralds, Super Sonic, Special and Bonus Stages

I listed the stuff Headcannon seemed to want to add to Sonic Origins' version of S3&K but couldn't, alongside the collection's bugs, oddities, inconsistencies between games and missing remaster content. : r/SonicTheHedgehog

Cheats and Secrets - Sonic Mania Guide - IGN

Sonic Origins cheat codes for level select, debug mode and Super Sonic

Sonic the Hedgehog 2 (16-bit)/Hidden content - Sonic Retro