A zone set in a city at night, under the stars, and containing many loops. This stage contains many roller coaster-like sections in which Sonic is hurled along paths at great velocity; it is possibly the game's strongest showcase of Sonic's speed. There are few enemies here, most of which cannot be destroyed by Sonic. At the end of Act 3, Dr. Robotnik shoots spiked mines onto three seesaws. To hit Robotnik, jump on the opposite end of a spike-bearing seesaw when he passes over to launch it at him, scoring a hit!