Kedawa makes an interesting point.
What the hell happened to Spring Yard Zone, Oil Ocean, Casino Night Zone (seriously), and all of the other very robotic, futuristic zones and scenery?
When did sonic get off a plane and go LOOK GUYS, CALIFORNIA. LETS GO CHECK OUT THE BEACH, HIT UP THE HOTEL, AND MAYBE KILL SOME BAD GUYS TOO IF THERES TIME BEFORE DINNER.