|This location exists primarily or exclusively within the Sonic X continuity.|
Information in this article may not be canonical to the storyline of the games or any other Sonic continuity.
During the Chaos incident, Casinopolis was damage when an Emerald Shard crashed into the building, making the police close down it in order to investigate. Casinopolis soon after visited by Knuckles the Echidna during his search for his Emerald Shards. With the officer's aid, Knuckles retrieved the shard within the building. Knuckles then requested that the police officers informed him if they found other Emerald Shards.
- In the Japanese dub of "A Chaotic Day", Casionopolis had the name "Casino" removed from the front.