Phantom Ruby

Eggrobos encountering the Phantom Ruby on Angel Island

The Phantom Ruby is a mysterious stone with a great power that appears in Sonic Mania. According to the game's digital manual, the stone was found by Dr. Eggman on Angel Island due to a unique wave signature emanating in the atmosphere. The scientist soon noticed that the gem had an unexplainable power and sent his elite group of Eggrobos known as the Hard-Boiled Heavies to retrieve it. The power of the gem causes the Eggrobos to transform, loosening a few of their screws.

Throughout the game, it is noted that the gemstone has the power to not only to cross dimensions, but also to return to certain moments in space-time, similar to the Time Stones.

During the true final fight of the game against Dr. Eggman and the Heavy King in the Egg Reverie, it is noticed that the gem causes anomalies both in space, as it is possible to notice the background of the final fight characterized by being something psychedelic, and also in time, noticed by the timer malfunctioning in the HUD. After Super Sonic defeats both Dr. Eggman and the Heavy King, the Phantom Ruby reacts with the Chaos Emeralds and opens a portal that transports Sonic to an unknown dimension. Template:Powerful Items