When he tried to take over the world in previous times, he constantly failed due to the intervention of Sonic, but when the hedgehog once again prevented him from taking over the world, he broke the last drop of patience and he decided to resort to the most extreme measures - to create a new world, he need to destroy the existing one, and for this, in the bowels of the Iron Canyon Zone, he creates a Nuclear Weapon and launches it into Green Hill Zone, where Sonic is now and there it has already begun to gradually work, which negatively affects the environment around Sonic. Eggman build plans to create all-new world, which will be called Eggmanland and will belong only to him. Story: In an alternate universe parallel to Sonic Forces on Earth, Christmas Island.

This is a heavy modification of the original game stylized as modern Sonic​ games, featuring new palette, new sprites, new level layouts (but so far only the first & last zones), rock style music remixes, new movements and a few little changes in code.

Sonic Acceleration is a work-in-progress disassembly modification of the original Sonic the Hedgehog videogame for the Sega Mega Drive/Genesis, developed by Staffer. NOTE: Keep in mind that the current version is only a demo version and it's still far from its end release.