Steeplechase

Steeplechase is a game by Atari Inc which simulates a horse race of up to six players and a computer opponent, released in 1975. In the game, players take on the role of a horse jockey and must leap barriers in order to come out ahead in the race. Each player uses a singular button for control of the equine's leaps, making this the first known instance of a jumping mechanic in a game.