Call of Duty 4: Modern Warfare is a first-person shooter video game in the Call of Duty franchise, developed specifically for the Nintendo DS. It was released by Activision in November 2007. The game features many elements of gameplay typical to the series, including vehicular missions and the usage of iron sights. The DS version was first shown at the E3 convention in July 2007, and one month later at the Games Convention. It received positive reviews, holding an average score of 76% based on 19 reviews on the review aggregator GameRankings, and was a top-seller in the United States. Gameplay As a first-person shooter, Modern Warfare puts the player in the role of various professional soldiers, with a focus exclusively on combat. The game offers a variety of real-world weapons and vehicles, including the M16A4, the AK-47, and the Uzi. The majority of the missions are ground-level infantry combat, but there are several missions in which the player mans a turret in an aircraft or Humvee. The player looks around and aims the currently equipped weapon using the touch screen. On foot, the touch screen is also used to switch and reload firearms, switch to grenades, and interact with the game world; the directional pad is used to move and the shoulder buttons fire the current firearm. To utilize unique features of the DS, this version includes several touch-screen features, including hacking terminals and bomb disarmament. Inventory controls and an overhead map and radar are located on the touch screen. The DS offers local multi-player via built-in wireless, but does not offer the online multiplayer central to the console and PC versions. The game takes place in several settings, including the Middle East and Russia, during a fictionalized conflict involving a coup in an unnamed Arab nation. The game features twelve single player levels in its campaign, as well as several multiplayer modes including deathmatch, team deathmatch, and capture the flag. Multiplayer supports up to four players and uses both multicard play and download play. Plot The DS version of the game, as is standard for a Call of Duty title, allows the player to assume the roles of several soldiers, who are either affiliated with the British SAS (Snowman) or the U.S. Marines (Cpl. Zach Parker). Unlike the console and PC versions of the game, players do not directly influence the outcome of the war, but instead take