Sonic & Knuckles + Sonic the Hedgehog 3 (World) ROM < Genesis ROMs

The concluding sequel to Sonic the Hedgehog 3, and the only Sega Genesis game to feature lock-on technology (allowing players to play as Knuckles in Sonic the Hedgehog 2 and the ability to combine it with Sonic the Hedgehog 3 into one big adventure).

Sonic_Knuckles_wSonic3.bin : Free Download, Borrow, and Streaming : Internet Archive

Sonic & Knuckles + Sonic The Hedgehog 2 (World) (Beta) (1994 05 24) : Free Download, Borrow, and Streaming : Internet Archive

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Sonic & Knuckles + Sonic the Hedgehog 3 (World) ROM < Genesis ROMs

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