Infinity Ward’s 2009 effort, Modern Warfare 2, sold around twenty-three million units, overtaking the original by nearly ten million. Shortly after the new decade began, two key figures from the company, co-founders Jason West and Vince Zampella, were fired by the CEO of Activision, Bobby Kotick, for “breaches of contract and insubordination.” It is widely speculated that this was done so Kotick could avoid having to pay West and Zampella bonuses for their successful campaign. This development in turn caused a significant chunk of Infinity Ward’s staff to leave the studio and file a lawsuit against Activision in order to regain their losses.
During this turmoil, Activision, not wishing to let a golden opportunity to cash in on a popular franchise go by, requested that members of the recently-formed Sledgehammer Games collaborate with Infinity Ward to create a sequel to Modern Warfare 2. This new company was founded by veterans Glen Schofield and Michael Condrey who were responsible for developing the widely praised horror-themed shooter, Dead Space. The burden fell on them and the remnants of Infinity Ward to complete the trilogy, tying up all the remaining loose ends in the process.