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Sonic 1: South Island Definitive is a hack by RadiantNexus Team, which seeks to reimagine Sonic 1 by rearranging levels. remixing music, adding features from future games, and readding scrapped ideas in new and interesting ways. Major features: 3 acts of reimagined level design, including one act that has yet to be fully reimagined in any other hack. A miniboss. Massive art overhaul all over the place. Music made by ProjectFM and MechaKnuckles. Menus! A custom splash screen. There's been massive engine overhauls as well, including the Sonic 3 level layout format for massive levels, and the Sonic 3 object manager to go alongside this.
Released on Sega Mega Drive/Genesis, by Jdpense.
Released on Sega Master System/Mark III, by DarkTheCreature.
The project reimagines the original West Side Island adventure with a narrative focused on Dr. Robotnik’s "terraformation scheme," which has transformed classic zones into surreal, expanded environments filled with new secrets and branching paths.
Sonic the Hedgehog: Proto-Mix is a ROM modification for the 2013 mobile/RSDK version of Sonic the Hedgehog. The hack is defined by its objective to "mix" the high-speed gameplay of the final 1991 release with rare, scrapped elements found in early prototype builds and magazine scans.
Released on Sega Mega Drive/Genesis, by TomatoWave_0.
A hack which combines Sonic 1 levels, Sonic 2 (final and prototype) levels, Sonic 3 levels, and Sonic and Knuckles levels into one game.
Giovanni's Level Pack 2 is a ROM hack of Sonic the Hedgehog for the Sega Genesis. Rather than overhauling mechanics, this hack focuses on providing high-quality, "classic-style" level design across three completely redesigned zones: Lunar Harbor, Burning Wood, and The Final Fight.