Infinity Ward announced on October 2009 that the PC version of '' Modern Warfare 2 '' would not support the use of user-run dedicated servers or in-game console commands . This announcement was received poorly by some members of the PC community , eventually instigating a response from Infinity Ward in an attempt to put the community at ease . During brainstorming sessions , an idea came forth on what if the ending of Modern Warfare was a loss , leading to the sequel . In an interview with Jesse Stern , he talked to producers of Infinity Ward with ideas such as " outbreaks , viruses , chemical warfare , and even outlandish things such as aliens and the living dead . " Stern mentioned having the game based on real-life conflicts before they halted further planning at first due to events in the 2008 South Ossetia war and in the Mumbai terrorist attacks
Mumbai terrorist attacks
2008 Mumbai attacks
Call of Duty: Modern Warfare 2