Pi Studios is a video game software developer based in Houston, Texas. The company was founded in 2002 by Robert Erwin, John Faulkenbury, Rob Heironimus, Dan Kramer and Peter Mack. The company moved from their original location in Plano, Texas, to Houston, Texas, in January 2005.
In November 2005, they released Call of Duty 2: Big Red One. Work on that project was done jointly with Activision's internal studio, Treyarch. This led to Call of Duty 3 in October of 2006, developed jointly with Treyarch. They followed that with the CoD3 Bravo Map Pack, downloadable via Xbox Live.
In addition they helped develop the Halo 2 Vista editing toolset and exclusive multiplayer map content, which were included with the game.