SC Cheats & Glitches: Sonic 2 - Debug, Level Select & Super Sonic

Sonic the Hedgehog 3/Hidden content - Sonic Retro

Sonic Classic Collection : Sega of America Inc: Video Games

Sonic the Hedgehog 2 Cheats For Genesis GameGear Sega Master System Xbox 360 iOS (iPhone/iPad) PC PlayStation 3 Android 3DS Nintendo Switch - GameSpot

Sonic Origins cheats: Level select, debug mode, and more

Sonic 3 & Knuckles - The Cutting Room Floor

Random Tweaks + Cheat Codes for Completed Saves [Sonic the Hedgehog (2013)] [Mods]

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

Knuckles the Echidna in Sonic the Hedgehog 2/Hidden content - Sonic Retro

Sonic 3 Unlocked: January 2018

Sonic Origins cheats: Level select, debug mode, and more

Sonic the Hedgehog 3, A Gamer's Cheat Codes Wiki

Sonic 2, iOS & Android

Sonic Origins cheats: Super Sonic, level select, and more

Sonic Origins cheats: Super Sonic, level select, and more