Objective: Collect 400 Rings.
Casinopolis is a unique stage where the primary objective isn't to reach a goal, but to collect a specific number of rings. You'll find yourself in a vibrant casino environment. The most efficient way to collect rings is by playing the slot machines and pinball tables. Approach a slot machine and press the action button to activate it. Match three Sonic faces for a large ring payout. The pinball tables, particularly the Sonic-themed one, can also yield a significant number of rings if you keep the ball in play. Explore the entire casino floor; rings are scattered throughout, and some are hidden behind breakable objects or in less obvious corners. Be careful of enemies that can make you lose your rings. Once you've collected 400 rings, the stage will conclude. This stage is less about speed and more about careful exploration and a bit of luck with the casino games.