Sonic The Hedgehog Tips & Tricks!!! – Weekly Humorist

Sonic the Hedgehog 2 (1992), A Gamer's Cheat Codes Wiki

Here's Some Cheat Codes You Can Use In Sonic Mania – NintendoSoup

Tails' Channel, celebrating 15 years on X: A number of Sonic 3 & Knuckles soundtest features were added in the latest update. @TheOcelot01 recapped all the codes in the list below. #SonicNews

Sonic the Hedgehog 3 – Hardcore Gaming 101

Steam Community :: Guide :: Sonic Origins Plus - Codes and Secrets

Sonic Mania Plus Cheat Codes Discovered

Sonic Origins 1.04 (Switch's 1.4.0) update released, addresses almost 50 bugs.

Sonic 3, Knuckles & Cie - Secrets & Codes .·::·. Planète-Sonic

Sonic Origins cheats, level select, debug mode, Hidden Palace Zone

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