Sonic 1 Co-op cover art

Sonic 1 Co-op

"Sonic 1 Co-op is a ROM hack of the original 1991 game for the Sega Genesis."

Dynamedia Team· December 31, 2025· Mod

Sonic 1 Co-op is a ROM hack of the original 1991 game for the Sega Genesis. This modification completely overhauls the base engine to support local, split-screen cooperative gameplay, allowing a second player to join as either Tails or a duplicate Sonic.

Sonic 1 Co-op screenshots

Sonic 1 Co-op screenshot 1
Sonic 1 Co-op screenshot 2
Sonic 1 Co-op screenshot 3
Sonic 1 Co-op screenshot 4

Games like Sonic 1 Co-op

Sonic 1 Co-op trailer and videos

Teaser
Teaser

Sonic 1 Co-op screenshots

Sonic 1 Co-op screenshot 1
Sonic 1 Co-op screenshot 2
Sonic 1 Co-op screenshot 3
Sonic 1 Co-op screenshot 4

Artwork & Box Art

Sonic 1 Co-op artwork 1
Sonic 1 Co-op artwork 2
Sega Mega Drive/Genesis
Standard
WW
Dec 31, 2025
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