'Sonic Genesis' (2022) by Slogra (MS Hack)
What if Sonic 1 on the Master System was more based on the Mega Drive game? A fantastic visual Master System hack!
https://www.smspower.org/forums/18542-SonicGenesisForMasterSystemV102?start=200#121192

'Sonic Flash' (1999) by Mike Karlsson & Fredrik Aldhagen (Demo)
Features both the original and Easter demos.
https://archive.org/details/SonicFlash

'SONIC SMD' (2024) by mohammedyasir (Hack)
Sonic.exe out to get you!
https://shc.zone/entries/contest2024/1127

'Pac-Man' (2021) by @SuperPhanto (SRB2 Mod)
He uses a moveset inspired by the 'Pac-Man World' trilogy. Waka-Waka!
#NonSonicWeekend
https://mb.srb2.org/addons/pac-man.3337/

'Battle Cross FEVER' (2023) by JMan (Demo)
New Characters, New Stages and New lock On system.
#NonSonicWeekend
https://sonicfangameshq.com/forums/showcase/battle-cross-fever-0-7.1892/

'Transylmania Deluxe' (2023) by Vampy's Castle
Vampy is back with a remake of the classic Flash game! Made using GDevelop. Leaderboard powered by gd.games.
#NonSonicWeekend
https://sonicfangameshq.com/forums/showcase/transylmania-deluxe.1865/

'JohnGagz' (2021) by @JohnGagz (Original Demo)
#NonSonicWeekend
https://sonicfangameshq.com/forums/showcase/johngagz-tba-pre-beta-blitz-sage-21.899/

'Sonic 1: South Island Expedition' (2024) by RadiantNexus Team (Hack)
seeks to reimagine the entire game for original hardware whilst maintaining the original core design and introducing new and old concepts.
https://shc.zone/entries/contest2024/1142

'Sonic Ultra 2' (1999) by Gregorsoft
https://archive.org/details/SonicUltra2

'Sonic: Powered Up' (2020) by Flash_G (Demo)
https://www.sonicfangameshq.com/forums/showcase/sonic-powered-up.754/