Current hits in the iTunes App Store include Call of Duty: World at War Zombies, Plants Versus Zombies, Zombie Farm and Call of Mini: Zombies.

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The free games, available as digital downloads, include recent releases Mass Effect 3, Plants vs Zombies and Bejeweled 3.

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First launched for the PC and Mac in May 2009, PopCap's Plants Versus Zombies found new life on the iPhone in February 2010.

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