Baseball was a baseball sports game that was created on a PDP-10 mainframe computer at Pomona College in 1971 by student Don Daglow. The game (actually spelled BASBAL due to the 6-character file name length restrictions) continued to be enhanced periodically through 1976. The program is documented at the Baseball Hall of Fame in Cooperstown, New York.
Baseball was the first interactive Baseball simulation game, allowing players to manage the game as it unfolded. It appeared ten years after John Burgeson wrote the first baseball simulation game, on an IBM 1620 at an IBM lab in Akron, Ohio.