Metal Gear Acid

Metal Gear Acid
Metal Gear Acid
Metal Gear Acid Coverart.png
Developer(s) Konami Computer Entertainment Japan
Publisher(s) Konami Computer Entertainment
Producer(s) Hideo Kojima (producer)
Designer(s) Shinta Nojiri (director)
Series Metal Gear
Platform(s) PlayStation Portable
Release date(s)
  • JP December 16, 2004
  • NA March 22, 2005
  • EU September 1, 2005
Genre(s) Stealth-based game, collectible card game, turn-based tactics
Mode(s) Single-player, multiplayer
Media/distribution UMD

Metal Gear Acid (メタルギアアシッド Metaru Gia Ashiddo?, stylized as METAL GEAR AC!D) is a turn-based collectible card[2] video game developed by Konami Computer Entertainment Japan for the PlayStation Portable handheld game console. The game was first unveiled at E³ 2004 in May, and was released in Japan on December 16, 2004, in North America on March 22, 2005 and in Europe on September 1, 2005. It was the first game in the series for the PSP.



Acid focuses on turn-based tactics. It uses a trading card-based system to control the main character's movements and actions. Acid stands for "Active Command Intelligence Duel". While the cards are not truly collectible because the game is complete with a single purchase, it does feature deck design and deck optimization elements.

Before each round, the player can customize the deck of cards used by the main characters. The majority of the cards are based upon elements spanning the entire Metal Gear series, such as weaponry, characters, and even the Metal Gear. The player's hand can consist of a maximum of six cards, while the maximum number of cards in a deck increases with overall progress. In action, the player can choose to use the cards as they are intended, or use them to move the character. Most cards only allow the player to move three spaces, while certain cards let the player move up to six or higher.

Cost is an important factor in game play, and can be summed up as the weight of the player's action. With some exceptions, all cards have a cost attached to them, and when used this cost transfers to the player. Cost varies radically from card to card. The higher the cost a character has, the longer that character must wait until their next turn. For example, if a player character has a cost of 15 and a guard has a cost of 10, then the guard's turn would occur before the character's.

Some cards can be equipped, and cards such as weapon cards can have other cards attached to them in order to improve performance. In order to fire the weapon, another weapon card that uses the same kind of ammunition must be equipped. Some weapons don't need to be equipped and can be used by themselves, however they are discarded afterwards. Other cards that can be equipped are equipment cards and action cards.

Multiplayer, or "Link Battle", is also a new feature. Two PSP systems running Acid can link wirelessly, allowing players to face each other in a "sneak-off". The objective is to collect a certain number of diskettes before the rival player. Diskettes can be stolen by another player, so there is an emphasis on avoiding detection.



In 2016, a jumbo jet carrying Senator Hach, an important politician and likely future presidential candidate, is hijacked by terrorists. In exchange for the senator, the terrorists demand Pythagoras, a research project being conducted in the Moloni Republic in southern Africa, from the United States government. In efforts to identify these terrorists, the government begins an investigation of Pythagoras.

The Moloni government refuses to cooperate and work with the United States, saying that it doesn't want to interfere in its current affairs. In response, the US sends in a covert special forces team to investigate, but the team is obliterated by armed resistance. With no other options and time running out, the US government calls Solid Snake to infiltrate the laboratory, discover the nature of Pythagoras and to rescue Senator Hach.

Place in the series

Metal Gear series fictional chronology

Metal Gear Solid 3: Snake Eater
Metal Gear Solid: Portable Ops
Metal Gear Solid: Peace Walker
Metal Gear
Metal Gear 2: Solid Snake
Metal Gear Solid (The Twin Snakes)
Metal Gear Solid 2: Sons of Liberty
Metal Gear Solid: Rising
Metal Gear Solid 4: Guns of the Patriots

Although Acid is part of the Metal Gear series, it does not follow the same continuity as the Metal Gear Solid games released for the home consoles.[3] The game features a new cast, but characters, weapons, items and game mechanics from previous games are depicted on the cards. There are three card packs available that cover each of the major Metal Gear games; Metal Gear Solid, Metal Gear Solid 2: Sons of Liberty and Metal Gear Solid 3: Snake Eater, as well as a fourth featuring cards based on the classic Metal Gear titles and miscellaneous Kojima games (Snatcher, Policenauts, Boktai and Zone of the Enders).


  • Solid Snake - The main character. A member of FOXHOUND who has achieved legendary status, he is brought to duty to infiltrate the Lobito Physics and Chemistry laboratory compound. Snake is led to believe that he is actually Hans Davis, a researcher involved in the development of the new Metal Gear model.
  • Teliko Friedman - A female Japanese-American member of the Federal Bureau of Investigation's Hostage Rescue Team that was sent to the Lobito compound prior to Snake. She rendezvous with Snake and teams up with him as a second playable character in the game. She reappears in Metal Gear Solid: Portable Ops as a hidden character. This character is replaced by Venus in Metal Gear Acid 2.
  • Roger McCoy - A Central Intelligence Agency operative from New Jersey who serves as Snake's commanding officer in the game. He previously served in the Green Berets and is an acquaintance of Roy Campbell, Snake's former commanding officer.
  • Alice Hazel - An English girl who has aided the FBI and CIA in the past with her psychic abilities. She is one of Snake's radio contacts in the game.
  • Lt. Leone - The leader of a mercenary group hired by an anti-government militia in the Moloni Republic. He was once known as Jeff Jones and served under McCoy's unit during the Vietnam War until he was suspected of treason.
  • Gary Murray - A lab worker who requests Snake's help. He is actually William L. Flemming and is involved in the development of the new Metal Gear.
  • Elsie and Frances - A pair of marionettes that carry out the hijacking of Flight 326
  • La Clown - An assassin of unknown gender with the ability to disguise his/her appearance.
  • Viggo Hach - A Dutch-American United States Senator from New York who is a presidential candidate. Taken hostage by terrorists during his flight.
  • Lena Arrows - Hach's secretary, who was also caught in the hijacking.
  • Minette Donnell - A young girl on the same flight as Hach. She is actually Constance Flemming, the daughter of William L. Flemming.
  • Charles Schmeiser - A CIA agent from Toronto, Canada who works under McCoy.


Title significance

According to an interview originally published by Electronic Gaming Monthly with the game's producer, Masahiro Hinami, the 'Acid' part of the title actually has three different meanings. The first meaning refers to Acid's departure from the previous Metal Gear games in terms of style, which is an analogue to acid's ability to dissolve metal. The second is a reference to vecuronium bromide, the chemical used by Elsie and Frances to hijack Flight 326. The third is stated to be an acronym for Active Command Intelligence Duel, a reference to the game's mixture of turn-based tactics with card-based gameplay.[4]


The game's soundtrack was composed by Nobuko Toda, Shuichi Kobori and Akihiro Honda. The soundtrack was released on December 21, 2005, packaged with the Metal Gear Ac!d 2 soundtrack. The album's title is Metal Gear Ac!d 1 & 2 Original Soundtrack.


Acid was followed by a sequel for the PSP, Metal Gear Acid 2, released the following year. A mobile phone version, titled Metal Gear Acid Mobile was also produced.


External links

Wikimedia Foundation. 2010.

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