Sonic Origins fan-made mod halted with three words: “Screw this game” [Updated]

GuilhermeSonic on Game Jolt: Mods Sonic 1 And Sonic 2 in Android

Sonic 1 Forever (Cool Edition) [Sonic the Hedgehog Forever] [Mods]

Sonic Boom In Sonic 1 Forever [Sonic the Hedgehog Forever] [Mods]

American Sonic 1 Forever [Sonic the Hedgehog Forever] [Mods]

Modgen S1F [Sonic the Hedgehog Forever] [Mods]

Custom / Edited - Sonic the Hedgehog Customs - Sonic 1 (2013) Custom Menu Zones - The Spriters Resource

Eggman In Sonic 1 - Colaboratory

Sonic's got new sprites in Sonic 1 Forever! ~ RatherNoiceSprites's Classic Sonic~ Sonic Forever mods

Sonic 1 Forever with the expansion pack mod is giving me a new hatred towards labyrinth zone i never had before : r/SonicTheHedgehog

Sonic Forever mod: An Ordinary spring yard zone by ExdeadlyMcLazy︎ - Game Jolt