Call of Duty (from Eng. - “Call of Duty,” “call of duty”) – a series of computer games in the genre of first-person shooter , dedicated to World War II , the Cold War , the fight against terrorism , a hypothetical Third World War , the wars of the future and space wars. The series consists of fifteen basic games and ten branches .
The story mode of the Call of Duty series of games is a linear first-person shooter where the player usually acts as a fighter in the army of any country or organization. As a rule, in one game of the series there are several protagonists who change during the course of the story. The events of the series games take place in different eras. The action of the chronologically first mission in the games of the series, the beginning of the Soviet campaign of Call of Duty 2 takes place in 1941, the action of the chronologically last game, Call of Duty: Infinite Warfare – in May 2080. Also, the games of the series take place at different time intervals. The smallest time interval affects the storyline campaign Call of Duty: Infinite Warfare – 3 days, the largest –Call of Duty: Black Ops IIwith an event interval of 39 years. Unlike the classic version of releasing sequels (when a later released game continues or complements the events of previous games or completely restarts the franchise), Call of Duty series games are divided into separate sub-series or independent games whose events are not canonical to each other.
In the games of the series, a wide selection of firearms is presented: both real-life types of weapons (parts whose action takes place in the past or near future), and fantastic. In story campaign missions, the player is given 2 types of firearms (in the Black Ops and Infinite Warfaresub-series, before the start of the mission, the player can independently choose his weapon and modify it), as well as one or two types of grenades. Almost all games in the series have the opportunity to take the weapons of eliminated opponents. In all games in the series, starting with Call of Duty 2, a system of automatic health regeneration is used: to replenish health, a player just needs to retreat to cover. Also in the games of the series, various “scripted” scenes are common to give the parts of the franchise more cinematic. During these scenes, the player may be given control of a different technique or the control customary to the genre may change.
In addition to the features common to the series, individual games may have their own characteristics.
The story campaign in the games of the series can be both single-player and cooperative . All major games in the series have difficulty levels. Call of Duty: Black Ops 4 was the first game in the main series, which abandoned the traditional single-player campaign. Instead of him in the game there are training missions with plot cut scenes.
In multiplayer mode, the player can choose from several standard game modes for the genre: deathmatch, team deathmatch, various capture options, and so on. The weapon system is completely identical to that in the story campaign: 2 types of weapons (with the possibility of modification and customization in the later games of the series), as well as grenades. In some games in the series, the player can select perks for his character. In later games of the series, a full-fledged character leveling system appeared. Parties to the conflict in multiplayer are usually factions represented in the storyline campaign.
Cooperative Zombie Mode
In addition to the storyline campaign and multiplayer in the games of the Black Ops sub-series , as well as in Advanced Warfare , Infinite Warfare and WWIIthere is a cooperative zombie mode, designed for 4 people. In this mode, players confront the endless coming waves of zombies. Complexity increases proportionally with each wave: the health and speed of zombies, as well as their number, increase. For the elimination of each zombie, as well as for some other tasks, players are given points that they can spend on the purchase of new weapons. As in other modes, players can have 2 types of weapons, as well as grenades. With some probability, bonuses can appear from the zombies that temporarily give a certain gain. For example, the “Instant Kill” bonus allows you to eliminate any zombie in one hit.
Initially, players open a small area of the map. New areas, like weapons, open for points.
The cards of the zombie mode of the Black Opssubseries are connected by a common storyline, the action of which takes place in another game universe in relation to the story campaign of this subseries. The corresponding modes in the rest of the games are not plot-related either to each other or to the campaign plot of their games.
In addition to the three modes listed in the games in the series, there are other game modes. For example, in Call of Duty Black Ops III, there is a Free Run mode in which players through obstacles using the game’s moving system (running, tackling, jumping, sliding on walls) must reach the finish line in the shortest amount of time.Initially, the series was created for personal computers , later it also began to be released on game consoles and portable devices. Game series Call of Duty issued by the company of Activision , and MacOS-version of some parts – Aspyr Media . The main games in the series are created by Infinity Ward , Sledgehammer Games and Treyarch   . All the latest major games in the series are created on a series of IW Engine engines and have a three-year development period. At various times, Gray Matter Interactive participated in the creation of other versions and editions of the game ,Spark Unlimited , Pi Studios, Amaze Entertainment , Rebellion Develorpments , Raven Software , n-Space , Neversoft and The Blast Furnace using a large number of different technologies.
The original Call of Duty was developed by Infinity Ward and published by Activision on October 29, 2003 for the Windows platform. T. Call of Duty theme and gameplay are similar to Medal of Honor , which also consists of single missions and campaigns, however, unlike Medal of Honor , war can be seen not only through the eyes of an American soldier, but also by a Soviet and British soldier. Initially, during the development of the game, the game did not have an official name and was held inside the company under the code name and only later was the name Call of Duty  chosen . On September 14, 2004, the United Offensive add-on was released . 2 years after the release of the first game in the series, Call of Duty 2 was released , which was also developed by Infinity Ward and released on October 25, 2005 for Windows and November 22 for the Xbox 360 .where the player is given the opportunity to be a soldier of the red, British and American armies. In 2006, the third part of the series was developed, which was developed by Treyarchand released November 7, 2006 for game consoles of the sixth and seventh generations. The plot of the game, like the previous 2 parts, was based on the events of World War II .
On November 5, 2007, Infinity Ward Call of Duty 4: Modern Warfare , the first game in the Modern Warfare sub-series , was launched , the events of which are unfolding not during World War II, but at the beginning of the 21st century. A year later, Call of Duty: World at War was released – the fifth game in the series, as well as the first game in the Black Ops sub-series , which was developed by Treyarch and released on November 11, 2008. On November 10, 2009, Call of Duty: Modern Warfare 2 was released – the second game in the Modern Warfare sub-series , developed by Infinity Ward . May 25, 2010 Call of Duty 4: Modern Warfarebecame the first game of the series available for purchase in the Xbox Live online store , which allowed users not to buy it on disk, but, having paid, download it to their console  . May 14, 2010 it became known that Activision registered domain names for the possible future series of Call of Duty : Call of Duty: Future Warfare, Call of Duty: Advanced Warfare , Call of Duty: Secret Warfare and Call of Duty: Space Warfare  . On November 9, 2010, Call of Duty: Black Ops was developed by Treyarch. February 10, 2011, summing up the results of the fourth quarter of the fiscal year, Bobby Kotick ( Eng. Bobby Kotick) announced that in 2011 Activision will put all its efforts into developing the series, changing the priority from the Guitar Hero series to Call of Duty  . On May 31, 2011 Activision announced the Call of Duty Elite  service , intended for users of Call of Duty games . In the summer of 2011, the service was presented in beta and testing was conducted on integration with the Call of Duty: Black Ops game , and a full launch was made in conjunction with the release of Call of Duty: Modern Warfare 3 , which was developed by Infinity Ward and released on November 8, 2011 of the year. November 13, 2012 the exit took placeCall of Duty: Black Ops II, developed by Treyarch .
In the second half of 2012, there was information that the Call of Duty series games will appear on mobile devices: mobile phones, tablets  , the likelihood of such an event increased with an official statement by Activision about its plan to develop its most successful games and series of games on mobile devices  , separately that the possibility of creating games of the Call of Duty series for mobile devices is being studied , was re-emphasized by the Activision representative at the end of April 2013  . The first game for mobile devices – Call of Duty: Strike Team  – was released on September 6, 2013.
The first game in the series released for PlayStation 4 and Xbox One was Call of Duty: Ghosts, developed by Infinity Ward. The game was released on November 5, 2013. On February 28, 2014, the Call of Duty Elite service was discontinued (the web interface and mobile application were discontinued), statistics remained available in games that supported the service ( Black Ops , Modern Warfare 3 and Black Ops II )  Activision explained the need termination of the service by the fact that the company is looking to the future in which the game and services such as Call of Duty Elite are constantly connected, for example, as a separate mobile application for players of Call of Duty: Ghosts . Since 2014, the development of games .