In this new story, Black Doom resurfaces and once again threatens to conquer the world. Shadow must relive his past, face painful memories, and unlock powers to save the world. Master Shadow's Doom Powers to defeat your enemies and overcome challenging courses. Surf on water, soar over obstacles, and stop time with Chaos Control! A journey through time and dimensions - Revisit iconic levels from Shadow's adventures and race through 3D and 2D stages distorted by Black Doom, as Shadow tries to repair the flow of time and foil his evil plans. A new White Space awaits exploration. With his new powers, Shadow will be able to continue his exploration and uncover secrets scattered everywhere! Dr. Eggman teams up with his past self and the mysterious Time Eater! They hurl Sonic and his friends through time in an attempt to erase their defeats and rewrite history. Now, Classic and Modern Sonic must unite to defeat this trio and restore the timeline! Dash through iconic 3D and 2D Sonic levels, enhanced with improved graphics and reworked cutscenes. Save hidden Chao, aim for the high score at the Casino Night pinball table, and discover new visuals, music, and more in the museum!

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