Call of Duty: Black Ops is a first-person shooter video game developed by Treyarch, published by Activision and due for release on November 9, 2010 for Microsoft Windows, Xbox 360, PlayStation 3, Wii, and Nintendo DS (separate version developed by n-Space) consoles. Officially announced on April 30, 2010, the game is the seventh installment of the Call of Duty series and the third game in the series to be developed by Treyarch. It is a sequel to the developer's previous title in the series, Call of Duty: World at War. It is the first Call of Duty title set during the Cold War era.
Black Ops is a first-person shooter. The player assumes the role of a foot soldier and thus has access to various firearms, of which two at a time can be carried, as well as explosives such as grenades and other equipment to fight enemies. When players are close enough to an enemy, they can perform a melee attack which ensures a one-hit-kill.
A character can be positioned in one of the three stances: standing, crouching, or prone; each affecting the character's rate of movement, accuracy, and stealth. The player can directly dive prone from a standing position. The player can momentarily run faster before getting tired. When the character has taken damage, the screen glows red. Health regenerates by avoiding damage. When the character is within the blast radius of a live grenade, a marker indicates the direction of the grenade, helping the player to either flee or throw it back.
The game features weapons like crossbows (with alternative explosive ammunition), Dragon's Breath rounds and ballistic knives. Brutality and gore are present, with a dismemberment feature.