Mario Tennis is an online N64 game that you can play at Emulator Online. This free Nintendo 64 game is the United States of America region version for the USA. Mario Tennis is a single title from the many tennis games, sports games and mario games offered for this console. If you enjoyed playing this, then you can find similar games in the n64 games category. Mario Tennis game is from the various retro games on the site, and there are more games like this, including Super Mario 64, Mario Tennis 64 and Mario Kart 64.