Sonic CB(Crystal Ball) is a fan-game experiment which blends 2D and 3D elements. The visuals are created by taking a large 3D sphere and wrapping it around the player. Other visual elements include a flexible screen which can zoom, stretch, and pan to the left or right. Objects on the 2D plane also have the ability to move along the Z-axis.
Pure Chaotix will be fully merged into Sonic CB. That will include the two stages that were originally created for PC. Espio, Mighty, and Vector will also be playable in CB.