Mortal Kombat ROM Download for Gameboy (GB) on Emulator Games. Play Mortal Kombat game that is available in the United States of America (USA) version only on this website. Mortal Kombat is a Gameboy emulator game that you can download to your computer or play online within your browser. You can also download free ROMs such as Mortal Kombat 3, Mortal Kombat II and Mortal Kombat I & II as shown below. Mortal Kombat works on all your devices in high quality.