VITA / PS TV - Sonic 1 SMS Remake by MDashK & Creative Araya

Sonic the Hedgehog™ Classic - Apps on Google Play

Sonic the Hedgehog (1991 video game) - Wikipedia

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Sonic the Hedgehog: Special Version (ver. 5.5) : EditChris : Free

Download & Play Sonic the Hedgehog Classic on PC & Mac (Emulator)

Sonic the hedgehog in genplusdroid : r/EmulationOnAndroid

Custom / Edited - Sonic the Hedgehog Customs - Sonic 1 (2013) Custom Menu BG (EU/US/JP) - The Spriters Resource

Sonic 1 and 2 Android Pc Port by ARTHURGAMES88 - Game Jolt

SHC 2019] Another Shadow the Hedgehog In Sonic 1 : AsuharaMoon : Free Download, Borrow, and Streaming : Internet Archive

Sonic 1 (2013): Decomp Refresh Edition :: Full Game Playthrough