Sonic Jr. (lost build of unreleased Sega Pico game; existence
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Had Sega Not Dropped Out - Video Games - Sonic Stadium
Sonic Adventure New Year's DLC (found Sonic the Hedgehog holiday-themed DLC; 1998) - The Lost Media Wiki
Sonic Jr. (Unreleased Pico Game, 1994 Existence Unconfirmed
Sonic the Hedgehog (serie) - Wikipedia, la enciclopedia libre
Sonic the Hedgehog (lost Winter Consumer Electronics Show 1991 demo build of Sega Genesis/Mega Drive platformer; 1991) - The Lost Media Wiki
Sonic Runners (found endless runner mobile game; 2015) - The Lost Media Wiki
Arcade Ultimate - Sega Retro
Sega Genesis / Platform - TV Tropes
Sega Pico/Beena Thread., Page 11
Editing Sonic Triple Trouble (lost Master System conversion of Sega Game Gear platformer; 1994) - The Lost Media Wiki
The Retrogaming Times - Tenth Issue - September 2017 - Page 2/2
Exclusive: SEGA appears to be working on a Sonic the Hedgehog
Sonic the Hedgehog (lost Tokyo Toy Show prototype build of Sega Genesis/Mega Drive platformer; 1990) - The Lost Media Wiki
Sonic Jr. (Sonic Fangame), Fan Fiction
Sonic the Hedgehog's Gameworld, Sonic Wiki Zone
