Sonic Mania

"By the Mania, for the Mania."

- Tagline. Sonic Mania is a platformer and side-scroller celebration to Sonic the Hedgehog's 25th anniversary. The game is set in an alternate timeline, Sonic, Tails and Knuckles try to defeat Dr. Robotnik and the Hard Boiled Heavies from using their new power source; The Phantom Ruby. The game plays along the events of Sonic Forces.

Plot
Sonic and Tails just saved Angel Island, but then a dimensional rift appears, throwing out it's energy throughout the island. Tails picks these strange readings up, reading that it's unbelievably powerful. Sonic and Tails then investigate the happening by traveling Angel Island on the Tornado. However, Robotnik is at the scene as wel, but only for it's incredible abilities. He sends his Egg-Robos to claim the gem. The two arrive at the island, but see that the heavies already plunged out the jewel. It causes everyone in the ruby's radius to get warped out of Angel Island and brought to Green Hill Zone. The odd stone has also turned the Egg-Robos in hard-boiled and stronger robots than they first were. Now having transformed, Sonic, Tails and Knuckles team up against the Heavies. But despite being too late from taking the gem away from the evil doctor, who uses it to keep the trio away, they will always come back to fight the doctor off, they will do so too against the Heavies.