Play Tennis Games on Emulator Online. We have the best Tennis games online for different retro emulators including GBA, Game Boy, SNES, Nintendo and Sega. There are over 23 online Tennis games in our collection. All of the games that you see here are without download, pick any and start playing right away. If you enjoy the game, be sure to vote for it and leave a comment. Tennis games that started it all back in the day are now playable free within your browser! Start by playing some of our popular Tennis online games like Mario Tennis 64, Mario Tennis - Power Tour, Mario Tennis and Mario Tennis.