NDS Cheats - Sonic Classic Collection Guide - IGN

Sonic The Hedgehog 3 Release Date, Cast, Director, And More Details

Sonic The Hedgehog 2 - Cheats - SMS Power!

Sonic & Knuckles - Mainline Sonic Games - Sonic Stadium

SC Cheats & Glitches: Sonic 3 & Knuckles - Debug & Level Select

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

GameShark Sonic Advance 3 Codes, PDF, Japanese Games

Sonic 3 & Knuckles - The Cutting Room Floor

Hacks - Sonic 1 Megamix

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

Sonic Origins: Cheat-Codes für das Retro-Bankett - COMPUTER BILD