Sonic the Hedgehog (2006)/Gallery, Sega Wiki

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Sonic the Hedgehog 2006 (lost build of Tokyo Toy Show tech demo of multiplatform platformer; 2005) - The Lost Media Wiki

Sonic Riders (lost build of cancelled Game Boy Advance port of racing game; 2006) - The Lost Media Wiki

Sonic '06 Website : SEGA : Free Download, Borrow, and Streaming : Internet Archive

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Sonic the Hedgehog/Gallery, Sega Wiki

Sonic the Hedgehog 2 (16-bit)/Development - Sonic Retro

Sonic the Hedgehog (lost build of cancelled Amiga port of Sega Genesis platformer; 1992) - The Lost Media Wiki

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