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