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Mac OS X N-Gage Xbox Live Arcade PlayStation Network}} | genre = First-person shooter | modes = Single-player, multiplayer }} ''Call of Duty'' is a 2003 first-person shooter video game developed by Infinity Ward and published by Activision, the first installment of the ''Call of Duty'' video game series.〔(Gamespot - Call of Duty ) Retrieved on September 23, 2007〕 The game simulates the infantry and combined arms warfare of World War II. The game is based on the ''Quake III: Team Arena'' engine. It was accompanied in September 2004 by an expansion pack, ''Call of Duty: United Offensive'', which was produced by Activision, and developed by Gray Matter Interactive, with contributions from Pi Studios. ''Call of Duty'' is similar in theme and gameplay to ''Medal of Honor'', as it is made out of single-player campaigns and missions. However, unlike ''Medal of Honor'', the war is seen not just from the viewpoint of an American soldier but also from the viewpoint of British, Canadian, and Soviet soldiers. The game was somewhat unusual at the time in that throughout the single-player mode the player is joined by computer-controlled allies who range in quantity from two infantrymen (in some of the British missions) to an entire regiment of tanks (in the Soviet missions). The computer-controlled allies will support the actual player during the missions. They also further the game's goal of providing an immersive and realistic experience; that is, soldiers in World War II were usually part of a larger group, as opposed to the "lone wolf" seen in video games such as ''Medal of Honor''. However, there are some missions where the player is alone. The "Hardened" and "Prestige" editions of ''Call of Duty: Modern Warfare 2'', released on November 10, 2009, includes a redemption code to download the game for Xbox 360 and PlayStation 3, giving it a new title, ''Call of Duty Classic''. ==Gameplay== As a first-person shooter, ''Call of Duty'' places the player in control of an infantry soldier who makes use of various authentic World War II firearms in combat. Each mission features a series of objectives which are marked on the heads-up display's compass; the player must complete all objectives to advance to the next mission. The player can save and load at any time, rather than the checkpoint system utilized in later ''Call of Duty'' games. The player has two primary weapon slots, a handgun slot and can carry up to ten grenades. Weapons may be exchanged with those found on the battlefield dropped by dead soldiers. Unlike later ''Call of Duty'' games, the first allows the player to toggle between different firing modes (single shot or automatic fire). ''Call of Duty'' was one of the early first-person shooters to feature iron sights in game play; by pressing the corresponding key the player aims down the actual sights on the gun for increased accuracy. In addition to weapons carried by the player, mounted machine guns and other fixed weapon emplacements are controllable by the player. The game uses a standard health points system, with a limited amount of health reflected by a health bar. Medkits scattered throughout the levels or dropped by some foes are used to restore health when the player is injured. ''Call of Duty'' also featured "shellshock" (not to be confused with the psychological condition of the same name): when there is an explosion near the player, he momentarily experiences simulated tinnitus, appropriate sound "muffling" effects, blurred vision, and also results in the player slowing down, unable to sprint. As the focus of the game is on simulation of the actual battlefield, the gameplay differs from many single-player shooters of the time. The player moves in conjunction with allied soldiers rather than alone; allied soldiers will assist the player in defeating enemy soldiers and advancing but the player is given charge of completing certain objectives. The game places heavy emphasis on usage of cover, suppressive fire, and grenades. AI-controlled soldiers will take cover behind walls, barricades, and other obstacles when available. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Call of Duty (video game)」の詳細全文を読む スポンサード リンク
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