Activision has announced a new iOS Call of Duty spin-off titled Black Ops Zombies.

Due out on the App Store tomorrow as a £4.99 universal app, it's a scaled down version of Treyarch's Zombie Mode featuring the Kino der Toten map from Black Ops and 50 levels of Dead-Ops Arcade.

According to Joystiq, there's four-way multiplayer with voice chat, and more maps, features and upgrades are planned post-launch.

It's the second outing for the undead Call of Duty spin-off, following the launch of Call of Duty: Zombies last year.

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