Out of the Park Baseball, abbreviated as OOTP, is a text-based baseball simulation for career, historical, and fictional play.
OOTP was originally written in 1998, when lead developer Markus Heinsohn sought to combine realistic replay baseball simulation with career play to satisfy hardcore fans and casual gamers alike.
The first version was released in May 1999 with the help of sportswriter Sean Lahman, who sold the game through his website. This initial version received attention from several online gaming sites. The breakthrough release came in 2001 with OOTP 3.
In 2005 OOTP was purchased by Sports Interactive, makers of Football Manager and NHL Eastside Hockey Manager, though Heinsohn remained the game's primary creative force. Out of the Park Baseball 2006 was released on May 31, 2006.
Out of the Park Baseball 2007 the eighth iteration of the game, was released on March 23, 2007, to much better reviews than its predecessor.
On September 20, 2007 Sports Interactive announced the amicable severance of relations with Out of the Park Developments and the OOTP franchise. In December 2007 Out of the Park Developments released Out of the Park Baseball 8, a simple update of OOTP 2007 that adjusted for the split from SI and added a few new features.
OOTP Developments released OOTP X (10) on June 5, 2009. OOTP 11 was released to the masses on April 14, 2010. In October 2010 OOTP announced that development had started on iOOTP, a version of the game for iPhone and iPod touch. iOOTP became available at the App Store on May 5, 2011.
In 2001, a retail (physical media) version of OOTP3 called Season Ticket Baseball was released. Released a year later was its sequel, a retail version of OOTP4 titled Season Ticket Baseball 2003.
Source: Wikipedia, "Out of the Park Baseball", available under the CC-BY-SA License.