Sonic CD (PC) : SEGA : Free Download, Borrow, and Streaming : Internet Archive

Sonic the Hedgehog CD (ソニック・ザ・ヘッジホッグＣＤ) is the first and only Sonic the Hedgehog title released for the Mega-CD add-on used with

Sonic Generations for the PC : Sega : Free Download, Borrow, and

Sonic the Hedgehog 2 Rev 2 : Sega : Free Borrow & Streaming

Sonic CD JPN/PAL Looping Project : Free Download, Borrow, and

Sonic 1 Steam ROM + Sonic 2 Steam ROM + Sonic CD 2011 + Sonic 3

Sonic the Hedgehog CD (Music) [Sega Genesis / Mega Drive] : Free

Sonic Compilation : Sega : Free Download, Borrow, and Streaming

Sonic 1 Sonic CD Edition (Animemaster) (SHC2016) : Free Download

Sonic 1 Kaizo Edition(Cancelled) : Free Download, Borrow, and

Sega Saturn Manual: Sonic Jam (1997)(Sega)(US) : Free Download

Sonic Heroes (PC): Portable Edition : Sega : Free Download, Borrow