SEGA and Christian Whitehead announced Sonic Mania as a 2D side-scrolling platform game to celebrate the 25th anniversary of Sonic the Hedgehog.
Sonic Mania was showcased with a playable demo at the Sonic Festival in London, giving fans their first hands-on experience with the game.
Sonic Mania was officially released worldwide for Nintendo Switch, PlayStation 4, Xbox One, and Windows PC.
An expanded edition of the game, Sonic Mania Plus, was released with additional content and characters.
The Phantom Ruby, a mysterious and powerful gemstone capable of manipulating reality, is created.
Dr. Eggman uncovers the Phantom Ruby and begins devising plans to use its power for his schemes to conquer the world.
Eggman develops advanced robots and mecha powered by the Phantom Ruby, including the Mean Bean Machine to challenge Sonic and friends.
Sonic the Hedgehog, Tails, and Knuckles detect strange disturbances and set out to investigate Eggman's latest plot.
The Phantom Ruby's power warps reality, causing the appearance of new zones blended with old ones, confusing Sonic and his friends.
Sonic and friends confront Dr. Eggman, who has integrated the Phantom Ruby's power into his machines, resulting in more formidable foes.
Sonic and his allies engage in the climactic battle to stop Eggman from exploiting the Phantom Ruby’s power globally.
The Phantom Ruby is destroyed, restoring reality and thwarting Eggman's plan to rewrite the world.
With peace restored, Sonic, Tails, and Knuckles celebrate their successful mission to protect the world from Dr. Eggman’s latest threat.
