Mario Kun (Mr. Mario) ROM Download for Nintendo (NES) on Emulator Games. Play Mario Kun (Mr. Mario) game that is available in the United States of America (USA) version only on this website. Mario Kun (Mr. Mario) is a Nintendo emulator game that you can download to your computer or play online within your browser. You can also download free ROMs such as Super Mario Bros 3, Kung Fu and Super Mario Bros as shown below. Mario Kun (Mr. Mario) works on all your devices in high quality.