: The game remains listed on the Steam Community for those who already own it in their library.
: Implementation of then-new 2020 MLB rules, such as 26-man rosters and the three-batter minimum for relief pitchers. : The game remains listed on the Steam
OOTP 21 introduced several significant upgrades to the franchise: including OOTP 21
Download Out of the Park Baseball for PC, Mac or Linux today : The game remains listed on the Steam
As of April 2026, the game is no longer the current version in the series (OOTP 27 is the latest). Official installers for older versions are primarily provided for customers who have already purchased a license.
: You can find setup files for previous versions, including OOTP 21, on the OOTP Developments Prior Versions page . Note that these installers typically require a valid license key to unlock the full game.