5. Call of Duty: Modern Warfare 2 (2009)
Although Modern Warfare 2 was criticized due to its short campaign and confusing plot, there were still some great moments in the single player campaign. These include dealing with enemies using a sniper rifle in the slums of Rio, and the game’s infamous “No Russian” mission. In that mission players could take part in an airport massacre, in what no doubt is the most controversial missions of the Call of Duty series to date.
The game also delivered a solid multiplayer experience, with special ops missions that could be played cooperatively and the new customizable rewards for the kill streaks (including a cool laptop-guided missile), making this game a worthy follow-up to the first Modern Warfare game.