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Metal Gear Acid Mobile is a video game developed by Kojima Productions for mobile phones. Although it is part of the Metal Gear series, it is not canonical. There are two versions of the game; a 2D version called Metal Gear Acid Mobile and a 3D version called Metal Gear Acid Mobile 3D. The game is a cut-down remake of the Metal Gear Acid on the PSP, with some missions and characters removed.