Mother Earth is on the verge of extinction. Over-population and mass urbanization have created a shortage of vital raw materials. You've been commissioned to pilot the most devastating weapon in the universe - code name: C.A.M. - and duel the almighty Akirovian empire for their precious resources.

The C.A.M. is a large robot that fights 1-on-1 against alien robots. All of the gameplay in Blackhole Assault revolves around single-round, 1-on-1 robot fighting action. There are 10 backdrops against which to beat up robots, including various planets and moons around the solar system.

The game has 4 different modes. The main story mode is Operation BHA. The exhibition mode allows players to customize matches down to the robots each player will use and the backdrop to play on. The exhibition mode can be configured to allow one or even both fighters to be controlled by the computer. Further, the game has tournament and league modes.

NB Blackhole Assault requires internal or external memory to work. If your internal memory needs reformatting, the MegaCD manual recommends that your console remains powered on for 6 hours after formatting before using the internal memory again to allow the internal battery to recharge.