Special Stage (Sonic the Hedgehog CD)

Special Stages in Sonic Rush Adventure are a series of special levels. These stages have a completely different gameplay compared to the special stages of the previous Sonic games. The objective for the player is to destroy all 6 of the UFOs that are constantly moving around the stage. As Chaos Emeralds are not involved within the storyline of Sonic CD, if the player successfully completes a special stage, he/she is rewarded a Time Stone instead. If the player collects all seven of the Time Stones (by completing all seven special stages) the following will happen:
 * Whenever Sonic travels into the future during any zone, he always travels to the good future.
 * Sonic will always clear any stage from the next stage onwards given with a good future.
 * After defeating the final boss, the player is treated to the good ending.