New Stages Metro Station - A massive city with a massive subway network Furnace Factory - Dr. Eggman's refinery and factory Jade Temple - Originally from the scratch project Sonic 2 Expanded, which has been cancelled (Studio is https://scratch.mit.edu/studios/28775085/). A temple hidden deep within the caves of West Side Island. Clock Castle - Dr. Eggman's newest fortress. Scrambled Station - The final normal level. It's a space station built by Dr. Eggman as a last resort in case he is defeated on the ground
