The legendary Metal Gear series comes to the PSP in METAL GEAR ACID. Experience a whole new gameplay system that focuses on deep tactical strategy with an entirely new Metal Gear storyline. As the role of top-secret agent, Solid Snake, players will make calculated decisions to plan out their infiltration strategy and accomplish the mission in a turn-based style of game. Through the use of strategic battle cards, players are given different abilities and stealth tactics to achieve the mission objectives. METAL GEAR ACID delivers the trademark stealth-action experience in a completely new game for the portable gaming audience to enjoy.