The base player level used for the above calculations are taken from the creator of the game. If the host leaves the game, a new player will be selected for the base once the next Terror Zone is announced. Terror Zone monsters will spawn at their new modified level or their original level, whichever is higher. Upon entering a Terror Zone-enabled game, you'll be informed of the current terrorized areas through a message sent to you via the Chat Box. When the time for new terrorized zones draws near, you will be informed of the impending changes via the Chat Box.
Call of Duty: Black Ops is a 2010 first-person shooter game developed by Treyarch and published by Activision. It was released worldwide in November 2010 for Microsoft Windows, the PlayStation 3, Wii, and Xbox 360, with a separate version for Nintendo DS developed by n-Space. Aspyr later released the game for OS X in September 2012. It is the seventh title in the Call of Duty series and the sequel to Call of Duty: World at War.
Set in the 1960s during the Cold War, the game's campaign follows CIA operative Alex Mason as he attempts to recall certain memories of combat to locate a numbers station. This station is due to transmit broadcasts to sleeper agents instructing them to deploy chemical weapons across the United States. Mason and CIA operative Jason Hudson are the game's main playable characters, as well as Red Army soldier Viktor Reznov in one mission. Locations featured in the game include Cuba, Laos, Vietnam, the Soviet Union, the United States, Hong Kong, and the Arctic Circle. The multiplayer component of Black Ops features multiple objective-based game modes that are playable on 14 different maps included with the game. Improvements to loadout options and killstreak rewards are made. A form of virtual currency, COD Points, allows players to purchase weapons and customization options for their in-game character, as well as attachments and customization options for their weapon.
Development for the game began in 2009. It runs an enhanced version of the IW 3.0 engine used in World at War. The improvements made allowed for bigger campaign levels to be made as well as enhanced lighting. Treyarch focused specifically on Black Ops during development; they were developing two games at once while making World at War. Different teams within the company focused on a certain game mode. Music was composed by Sean Murray, with music by The Rolling Stones, Creedence Clearwater Revival, Eminem, and Avenged Sevenfold appearing in the game. The marketing of the game began in April 2010.
The game received generally positive reviews from critics with praise for its story, voice-acting, darker tone and multiplayer modes, although some criticized it for its lack of innovation, linear gameplay, and technical issues. Among other awards and nominations, Call of Duty: Black Ops was nominated Game of the Year by numerous media outlets and award shows, including the Interactive Achievement Awards, British Academy Games Awards, and Spike Video Game Awards. Within 24 hours of going on sale, the game had sold more than 5.6 million copies, breaking the record set by its predecessor Modern Warfare 2 by some 2.3 million copies. The game had sold over 25 million copies worldwide, making it one of the best-selling games of all time. A sequel, Call of Duty: Black Ops II, was released in 2012. Call of Duty: Black Ops Cold War, set between Black Ops and Black Ops II, was released in November 2020.
Black Ops is a first-person shooter, retaining the same gameplay mechanics as previous Call of Duty titles. The player assumes the role of a foot soldier who can wield various firearms (only two of which can be carried at once), throw grenades and other explosives, and use other equipment as weapons. A player close enough to an enemy can kill with one knife blow. A character can take three stances: standing, crouching, or prone. Each affects the rate of movement, accuracy, and stealth. The player can drop to the prone stance from the standing stance while running (colloquially known as \"dolphin diving\"), and can momentarily sprint before having to stop. The screen glows red to indicate damage to a player's health, which regenerates over time. When the character is within the blast radius of a live grenade, an on-screen marker indicates where it is in relation to the player, helping the player to move away or to throw it back. Among the weapons new to the series in Black Ops are crossbows with bolts and explosive ammunition, Dragon's Breath rounds and ballistic knives.
The player assumes the role of various characters during the single-player campaign, changing perspectives throughout the story. The playable characters are covert operatives conducting black operations behind enemy lines. Each mission features a series of objectives that are displayed on the heads-up display, which marks the direction and distance towards and from such objectives as it has been in the earlier versions. The player is accompanied by friendly troops throughout the game. Although primarily a first-person shooter, certain levels feature sequences where the player pilots a Hind helicopter and guides friendly troops from a SR-71 Blackbird reconnaissance aircraft. The campaign features several scripted cinematic moments. One of them is a bullet time effect during the \"Victor Charlie\" level, activated when the player fires toward the last enemy of a Viet Cong squad.
A currency system has been implemented allowing players to buy weapons, accessories, and clothes. Players can gamble with their \"COD Points\" in a free-for-all based playlist called \"Wager Match\", which is composed of four game modes. Time-limited objectives known as \"Contracts\" can be purchased to gain more currency and experience points. The progression system is not featured in the local split-screen multiplayer. In the local split-screen play, all character customization options are already unlocked. Players can no longer define game rules such as win conditions.
For the first time in the series, clips from online gameplay can be recorded. Some specific features that have been removed from the PC version of Infinity Ward's Modern Warfare 2 return, such as lean, mod tools, the developer console, and dedicated servers. Dedicated servers are exclusively provided by Game Servers. Steam is the exclusive platform for Black Ops on PC, and the game is protected by Valve Anti-Cheat.
The Wii version of the game includes in-game voice chat. This is the first Call of Duty title to include the voice chat feature for the Wii. Nintendo and PDP have partnered to release the first headset to be used with the Wii known as PDP's Headbanger Headset.
A zombie cooperation mode, titled \"Zombies\", is included in the game. Originally featured in World at War, it was revamped to be included in Black Ops. It is a four-player online and two-player split screen co-op mode (which can also be unlocked online). The game features three maps, \"Five\", Kino Der Toten, and the unlockable Dead Ops Arcade. \"Five\" takes place in The Pentagon during a chain of events that differ from the storyline of the campaign mode. The playable characters, John F. Kennedy, Richard Nixon, Robert McNamara, and Fidel Castro are interrupted from negotiations by an outbreak of zombies. Kino Der Toten takes place in an abandoned Group 935 facility located within a theater in Berlin during 1963. The playable characters in this map return from the World at War Zombies mode: Edward Richtofen, a mad German scientist, Takeo Masaki, an officer of the Imperial Japanese Army, Nikolai Belinski, a Red Army soldier, and Tank Dempsey, a Marine from the United States. Dead Ops Arcade is an unlockable game mode that the player can unlock by typing \"DOA\" within the data terminal of the main menu. Once unlocked, the player is transferred to play a retro arcade version of the main zombie's game mode. New elements like extra lives, unique mini maps, and zombie bosses are present within the game mode. Dead Ops Arcade includes co-op playthrough through either Xbox Live or split screen of up to 4 players.
The player controls the protagonist, CIA SAD/SOG operative and former U.S. Marine Force Recon Captain Alex Mason (Sam Worthington). Occasionally, CIA paramilitary operations officer Jason Hudson (Ed Harris) and some other characters are playable to progress the story. Alex is often joined by fellow operatives Force Recon Master Sergeant Frank Woods (James C. Burns) and Navy UDT Chief Joseph Bowman (Ice Cube), while Hudson teams up with Grigori Weaver (Gene Farber), a Russian-born field operative. Viktor Reznov (Gary Oldman), a key character from the Soviet campaign in World at War, returns along with that game's Russian protagonist Dimitri Petrenko (Boris Kievsky) also making an appearance. Oldman also voices Daniel Clarke, a British scientist assisting in the development of Project Nova. Opposing the CIA are the leaders of Project Nova: former Red Army General Nikita Dragovich (Eamon Hunt), Colonel Lev Kravchenko (Andrew Divoff), and former Nazi scientist Doctor Friedrich Steiner (Mark Bramhall). Black Ops also features several historical figures; during the story, Mason meets John F. Kennedy, Robert McNamara, and Fidel Castro.
In May 2009, publisher Activision was rumored to be looking for licensing regarding Vietnam War-era music which led to speculation that Call of Duty 7 would be set in Vietnam. In May 2009, Treyarch employee David Kim revealed on his LinkedIn profile that he would work as a senior animator on Call of Duty 7.