Irrational Games

Description from its website:

Irrational Games is an award winning video game developer located in Quincy, MA and founded in 1997 by Ken Levine, Jonathan Chey, and Robert Fermier. The team made its name with the much loved first person shooter System Shock 2. This was followed by two Freedom Force games, SWAT 4 and Tribes: Vengeance. In 2005 Irrational Games was acquired by Take-Two Interactive. The team was renamed 2K Boston in 2007, just in time to coincide with the release of the critically acclaimed BioShock, which went on to win over 50 awards including Best Game from BAFTA. In 2010 the team returned to its roots by reclaiming the Irrational Games moniker.