A "Special Ops" mode will be featured in Modern Warfare 2, comparable to the "Mile High Club" epilogue mission in Call of Duty 4: Modern Warfare, consisting of isolated missions in a variety of settings unrelated to the campaign story. The main campaign will be single-player only, but the "Special Ops" mode will support two-player cooperative play. Missions in this mode were created from portions of levels in the campaign, and will feature such scenarios as a snowmobile race, a battle alongside U.S. Navy SEALs, and fending off a wave of 50 enemies at once.
Modern Warfare 2 is set several years after the conclusion of Call of Duty 4: Modern Warfare, in which the latter's protagonist Sergeant "Soap" MacTavish will return as a non-playable character, after being promoted to captain in the Special Air Service. MacTavish will lead an elite, multinational commando unit, Task Force 141, to counter the resurgent Russian Ultranationalist organization.
The group is now led by Vladimir Makarov, a former associate of Imran Zakhaev with his own nationalistic ambitions. Makarov has been portraying Zakhaev's death as an act of martyrdom to garner support for his cause, and has built a strong power base in Russia over the years. In response to the threat posed by Makarov, the global community established Task Force 141 to stop him.
The player will take on the role of Task Force member Sergeant Gary "Roach" Sanderson. Mission settings will include Russia, Kazakhstan, Afghanistan, and Rio de Janeiro, Brazil. In response to questions about the length of the single-player campaign, Infinity Ward CCO Jason West stated that Modern Warfare 2 would not be longer than the 6-10 hour-long campaign of Call of Duty 4