Mario Party ROM Download for Nintendo 64 (N64) on Emulator Games. Play Mario Party game that is available in the United States of America (USA) version only on this website. Mario Party is a Nintendo 64 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 64, Mario Party 3 and Mario Kart 64 (V1.1) as shown below. Mario Party works on all your devices in high quality.