Call of Duty on Steam. Welcome to Call of Duty HQ, the home of Call of Duty: Modern Warfare III, Call of Duty: Modern Warfare II and Warzone!". Recent Reviews: Mixed (12,814) - 49% of the 12,814 user reviews in the last 30 days are positive.Call of Duty: Modern Warfare on Steam. Experience a visceral Campaign or assemble your team in the ultimate online playground with multiple Special Ops challenges and a mix of Multiplayer maps and modes.
