Infinity Ward is an American video game developer

Video game developer

A video game developer is a software developer that creates video games. A developer may specialize in a certain video game console, such as Nintendo's Wii, Microsoft's Xbox 360, Sony's PlayStation 3, or may develop for a variety of systems, including personal computers.Most developers also...

. Infinity Ward is responsible for the development of the video game Call of Duty and four other installments in the Call of Duty franchise

Call of Duty

Call of Duty is a first-person shooter video game developed by Infinity Ward and published by Activision in 2003. It is the first game in a series with the same name. The game simulates the infantry and combined arms warfare of World War II. The game is based on the Quake III: Team Arena engine...

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Vince Zampella and Grant Collier established Infinity Ward along with Jason West in 2002 after working in 2015, Inc.

2015, Inc.

2015 is a video game development studio founded in 1997 by its President and CEO, Tom Kudirka. Currently, 2015 is located in Tulsa, Oklahoma, U.S. 2015 is perhaps most famous for the development of the highly successful PC game Medal of Honor: Allied Assault...

 previously. All of the 22 original team members in Infinity Ward came from the team that had worked in Medal of Honor: Allied Assault

Medal of Honor: Allied Assault

Medal of Honor: Allied Assault is a first-person shooter computer game developed by 2015, Inc. and created by Steven Spielberg. It is the 3rd installment of the Medal of Honor series...

 while in 2015, Inc.

2015, Inc.

2015 is a video game development studio founded in 1997 by its President and CEO, Tom Kudirka. Currently, 2015 is located in Tulsa, Oklahoma, U.S. 2015 is perhaps most famous for the development of the highly successful PC game Medal of Honor: Allied Assault...

 Activision helped fund Infinity Ward in its early days, buying up 30 percent of the company.