The Decathlon is a series of Olympic games similar to other sports games. Up to four players can compete in the ten different events of a real-life decathlon, either in sequence or individually. The events include the 100-meter dash, long jump, shot put, high jump, 400-meter race, 110-meter hurdles, discus throw, pole vault, javelin throw, and 1500-meter race.
The gameplay involves simple joystick movements and button presses to compete in each event. For flat running events, players must balance joystick waggling with accurately-timed button presses to clear hurdles without losing momentum. For jumping and throwing events, players must build momentum by waggling the joystick and then press the button at the right moment.