Play The Black Onyx online Adventure game and discover why millions of fans love it years after release! No need to buy the original Sega Master System or download sketchy archives. This ready-made The Black Onyx emulator is browser-friendly and requires no tinkering. Wait for the menu to load, and press Start to access the unabridged experience. Enjoy unlimited sessions of The Black Onyx for free without installation and have fun!
For the Sega Master System console, the controls for all games are the same. For more information, see «Controls» after the The Black Onyx game window.