The Activision Decathlon is a series of Olympic games similar to the Epyx games series. Up to four players can compete in the ten different events of a real-life decathlon, either in sequence or individually. Included are 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 perform various Olympic events. The flat running events require balancing joystick waggling with accurate timing to avoid losing momentum. For jumping and throwing events, players must build momentum by waggling the stick and then press the button at the right moment. Points are earned based on performance in each event, with the player scoring the most points winning the gold medal.