Irrational Games was a video game developer founded in 1997 by three former employees of Looking Glass Studios: Ken Levine, Jonathan Chey, and Robert Fermier as Irrational Games. On January 9, 2006, Take-Two Interactive announced that they had purchased Irrational, and would publish their games under the 2K Games label.
At its largest point Irrational had two studios, one in Quincy, Massachusetts, USA just outside Boston, Massachusetts and the other in Canberra, Australia.
A third studio, 2K Marin, was split off from 2K Boston in 2007, with five former Irrational Games employees leaving to join the new company. 2K Marin worked with 2K Australia on BioShock 2.
The Canberra studio separated from the Boston studio at some point after 2007, and merged with 2K Marin in 2010.
In late July 2010, several media outlets reported that a recently created website, whatisicarus.com, was a promotion relating to Irrational Games' unannounced project. The following week, information about the game was again teased, with the trailer confirmed for release on August 12, 2010. It turned out to be BioShock Infinite.
Ken Levine announced on February 18, 2014 that Irrational Games will be closing, with fifteen members of the staff to follow Levine to focus on digital-download, narrative driven games for Take-Two games. Levine stated "I am winding down Irrational Games as you know it. Iâ€™ll be starting a smaller, more entrepreneurial endeavor at Take-Two."