"Before the future could be won, history had to be written. Exposing that story exclusively on PlayStation Vita, Call of Duty: Black Ops Declassified explores original fiction in the Call of Duty Black Ops universe with an all-new campaign of Special Ops missions. Optimized for gamers on-the-go, Call of Duty Black Ops: Declassified delivers the most intense handheld Call of Duty experience to date, including both Special Ops Story mode and Multiplayer combat tailored for the PS Vita."
Declassified's gameplay is similar to its predecessor Call of Duty: Black Ops. The game fully ultilises the Vita's dual-analog sticks, as well as a variety of the Vita's features. The Vita's touchscreen is used for several actions. Grenades, for instance, are accesed via the touchscreen. Additionally, knifing has also been mapped to the touchscreen. The Vita's rear touchpad's sole purpose is holding the players breath while aiming a sniper. Sprinting has been mapped to "down" on the d-pad, due to the Vita's lack of R3 and L3 buttons.
Declassified's single player is split into three modes: campaign, hostiles, and time trials. The campaign is made up of several "operations", none of which are directly related. Hostiles, an all new game mode to the franchise, is similar to Call of Duty: Modern Warfare 3'sSurvival Mode. Players must survive infinite waves of enemies, over the course of 5 maps. Players are given care packages between waves, containing killstreaks, ammo or weapons. Time trials, another new mode, is essentially a collection of target ranges. This mode serves mostly as a brief training course for the player.
Additionally, Declassified also uses "Near", a Vita app that allows nearby players to communicate. In Declassified's case, players can share certain loadouts.
Multiplayer in Call of Duty: Black Ops: Declassified supports eight players via WiFi across six maps. Modes available are Free for all, Team Deathmatch,Kill Confirmed, Drop Zone, and Team Tactical. Create-a-Class is present, letting the player chose a primary weapon with two attachments, a secondary weapon with one attachment, three perks (one of each tier), a lethal grenade, a tactical grenade, and three killstreaks. Weapon leveling is also present, similar to how it is in Modern Warfare 3 and Black Ops II, with 20 levels for each primary weapon and 10 for each secondary weapon. It is possible to Prestige, although there are no known rewards for doing so. There are 12 perks (4 for each tier) and seven killstreaks