In this boxing game, Muhammad Ali Heavyweight Boxing , you control Muhammad Ali as he fights a series of opponents to become the heavyweight champion of the world. The game has two modes: Single Fight and World Title Trial. The Single Fight mode is an exhibition mode where you can choose from 31 boxers to be your opponent, and select the number of rounds to fight between three and eight. In contrast, World Title Trial is a career mode where you must defeat boxers to earn money and move up the rankings. You start at rank 29 and can choose from the three boxers ranked below you for your first fight.
During training, Ali has four attributes: power, speed, accuracy, and stamina. You can select five different training regimes - small punch bag, skipping rope, heavy punch bag, weight training, and road work training - to improve his skills. Additionally, you have the option of sparring with a combo punch.
In the fight itself, boxers compete in two-minute rounds. The power meter decreases as they get fatigued, while punches deplete the health meter, an interactive silhouette boxer that turns white after each punch landed. To win, you must weaken your opponent's health meter and land a series of successful combos.
The game also features different ways to win: a TKO (three knockdowns in one round), or a points decision where you score more points than your opponent. At the end of each training session, the game provides a unique password that allows you to continue playing.