Activision helped fund Infinity Ward in its early days, buying up 30 percent of the company. All of the 22 original team members of Infinity Ward came from the team that had worked on Medal of Honor: Allied Assault while at 2015, Inc. Vince Zampella, Grant Collier, and Jason West established Infinity Ward in 2002 after working at 2015, Inc.
They developed the video game Call of Duty, along with seven other installments in the Call of Duty series.