Steam Workshop::Sonic 1 Mania Style

Sonic Before and After - 3 and Knuckles vs Mania by JadenFox998 on DeviantArt

Steam Workshop::Sonic Mania (Plus)- Sonic the Hedgehog (Louis)

Sonic Mania Plus - Switch

Classic Sonic's always showing up in Modern Sonic's games, so it's about time Modern Sonic repaid the favor. : r/SonicTheHedgehog

Sonic Mania: Collector's Edition (PC, 2017) for sale online

Sonic CD Mania-Lite [Sonic CD (2011)] [Mods]

Steam Curator: Sonic the Hedgehog

Sonic Mania on Steam

Steam Workshop::Sonic 1 Mania Style

Steam Workshop::Best Sonic Mods