Play Circus Mario emulator game online in the highest quality available. Circus Mario is a Nintendo game that you can enjoy on Play Emulator. This NES game is the US English version that works in all modern web browsers without downloading. Circus Mario is part of the Mario Games, Arcade Games, and Platform Games you can play here. PlayEmulator has many online retro games available including related games like Mickey Mouse: Great Circus Mystery, Super Mario Advance 4, and Super Mario Bros 3.