Collecting all seven Chaos Emeralds is arguably the most important 'side quest' in Sonic Mania. These powerful gems are obtained by entering giant rings hidden throughout the Acts and completing Special Stages. Each Special Stage is a 3D chase sequence where you must collect blue spheres to increase your speed and catch a UFO carrying an Emerald. The more rings you have when entering a Special Stage, the more time you have. Mastering the controls and knowing the optimal paths in these stages is crucial for success.
