After the formation of 2K, Take-Two completed other major acquisitions. Firaxis Games was acquired in November 2005 for around US$27 million ;[12] Take-Two had already supported the studio by using their acquisition of the Civilization license to support publishing of Civilization IV.[13] Irrational Games was acquired around January 2006 for about US$10 million , including both its Boston and its Canberra studio.[3] At the time Irrational had already established a publishing deal with Take-Two for their upcoming BioShock game.