Aquarium Park is an underwater-themed world that introduces the Blue Cube Wisp. This Wisp allows Sonic to transform into a cube, crushing enemies and activating blue-block switches. The levels here are often submerged, requiring careful navigation in water, which slows Sonic down. However, the Blue Cube can help overcome some of these challenges. You'll also encounter sections with strong currents and unique underwater enemies. Mastering the Blue Cube is essential for finding all secrets and maintaining momentum.
