Casino Ring is one of Sonic Heroes's multiplayer stages in Sonic Heroes in Team Battle. When playing through all the three stages of Team Battle, Casino Ring is the second stage played in order.
The two teams fight out against each other on an arena identically used in the Robot Carnival stage in single player mode. There are notably many wooden and metal crates in a circular path which could contain power-ups, springs or in the most unlucky case; round spike balls to damage the player.
The winner in this stage is whichever team can force the opposing team off the stage first.