Call of Duty: Black Ops (also known as simply Black Ops) is the seventh main installment of the Call of Duty series and is currently being developed by Treyarch.[2] The confirmation of the game's development was leaked by David Kim, a senior animator at Treyarch, in May 2009. Black Ops is said to be set in various locations, including Vietnam and Cuba, [3] and judging from weaponry and dates given in the trailer, it is set between 1960 and 2010. It is planned to be released on November 9, 2010.[4] Treyarch has stated that Black Ops will be much grittier than Modern Warfare 2 and that the differences between World at War and Black Ops will be as significant as the differences between Call of Duty 2 and Call of Duty 4: Modern Warfare.[5] The trailer released on May 18, 2010 indicated that the game will be significantly more story-oriented and will focus on military cover-ups during the Cold War. Treyarch has also said that Black Ops will feature considerably more stealth than any previous entries in the Call of Duty series

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.