Play Mario Tennis emulator game online in the highest quality available. Mario Tennis is a Gameboy Color game that you can enjoy on Play Emulator. This GBC game is the US English version that works in all modern web browsers without downloading. Mario Tennis is part of the Mario Games, Arcade Games, and Sports Games you can play here. PlayEmulator has many online retro games available including related games like Super Mario 64, Mario Kart 64, and Super Mario World.