Considering the series' current reputation as a dried-out cash cow, it's easy to forget just how revolutionary and mind-blowing Call of Duty 4: Modern Warfare was on its release. Taking place in 2011 following the beginning of a Russian civil war, Modern Warfare took players on an incredible, action-packed journey. The key reason for Modern Warfare's success was its brilliant online multiplayer. The maps were varied and memorable, while the weapons felt balanced and fun to use. The simple kill streaks were also cited as a refreshingly addictive feature of the game, before the excess of tactical nukes and chopper gunners that were added in its sequel. Although the game is most remembered for its multiplayer component, the single-player was nothing short of a masterpiece. In its short length, Modern Warfare's campaign tackled hard hitting topics and delivered a compelling narrative that blew away everything seen in just about any other modern military shooter.
