Sky Park Zone

Sky Park Zone is the third zone in Sonic Rivals. It is a carnival-style zone located on Onyx Island, a future version of Angel Island brought to the present by Eggman Nega. The player must race against Metal Sonic in order to get through the stage.

Overview
Fitting the carnival theme, Sky Park Zone features circus tents, circus shops with prize displays, wooden broardwalks Roller Coasters and rails, and colorfull ballons floating around (especially oversized ballons shaped like Tails' and Amy's heads).

This zone specifically takes place at night and gives a clear view of the stars and large full moon in the background and has several light chains and neon "Eggman" signs which light up the course.

The game gimick of this level features red stuffed bears on the prize displays which will jump out and latch onto the player character, thus slowing them down and other Carnival attractions that help the characters advance to the goal; most predominantly, Roller Coasters (though they can tend to drop the player on spike blocks).

Sonic and Shadow
After defeating Egg Falcon, Shadow receives another call from Rouge who is about to reveal something important about the "Dr. Eggman" (which is really Eggman Nega) Shadow had been chasing, but is suddenly interrupted and is cut out. As Shadow wonders what is going on, he is suddenly warped to Sky Park Zone. There he meets Sonic, who had just been fighting Silver, but then got teleported to this place by Silver himself. Shadow however intends to find Dr. Eggman and save Rouge and Sonic challenges Shadow to see who find him first.

Sonic eventually reaches "Dr. Eggman" first and wants to know his plan, but doctor instead makes Sonic fight his metallic counterpart, Metal Sonic. Shadow later reaches Dr. Eggman himself, and demands to know what he had done to Rouge. The doctor reveals he had turned Rouge into a card, and sends Metal Sonic up against Shadow.

Knuckles and Silver
Knuckles, having just defeated the Egg Falcon, demands "Dr. Eggman" to give back the card containing the Master Emerald, but the disguised Eggman Nega uses it to teleport him to Sky Park Zone. As he looks around, he meets Silver, who had been following "Dr. Eggman" since he teleported Sonic away. Silver asks Knuckles if "Dr. Eggman" had something weird on him, and Knuckles answers that he had a strange camera, but then asks Silver who he is. Silver however, reconizes the camera and tries to leave, but Knuckles races after him to get some answers.

When Knuckles reaches "Dr. Eggman" he want to konw how he stole the Master Emerald from Angel Island and the doctor reveals that Onyx Island IS Angel Island, much to Knuckles confusion, and puts Metal Sonic against Knuckles. When Silver reaches "Dr. Eggman" Silver wants to know how he got a hold of that camera, which technology should only exist in the future, but the doctor says he has to defeat his Metal Sonic first if he wants an answer.

Trivia

 * This level was first seen in the Leipzig Game Convention trailer.
 * It's possible that Sky Park Zone could be the Carnival Night Zone on Angel Island in the future.
 * This is the only zone in Sonic Rivals not to have a boss as the third act. Instead the player races Metal Sonic in the second act.