The Armory is a stage that made its debut in Mortal Kombat II. This is where the Outworld weapons are crafted; there is molten metal in the background that would have been used to make them. The Mortal Kombat symbol hangs in the center room. The Armory is also part of Shao Kahn's Fortress.
The stage also appears in Mortal Kombat: Tournament Edition.
In Mortal Kombat: Shaolin Monks, the Armory serves as the penultimate stage (as well as being part of the Foundry) in the game leading to Shao Kahn's Arena. Here the player must craft an axe by solving puzzles in order to shatter the crystals which lock the gateway leading to Kahn's Arena. The stage also houses an elusive secret called Survival Mode in which the player must survive the 9 stages against most of the bosses in the game in several locations.
An updated version of this arena is featured in Mortal Kombat: Armageddon. This version of the Armory retains the molten metal in the background, which a player can now be knocked into as a death trap, but now also features a giant rolling rock crusher on a conveyor belt, which is used to smash ore to be melted down for weapons-making, or any player unlucky enough to be knocked onto it.
In Armageddon's Konquest mode, Taven explores Shao Kahn's Fortress and is confronted by Mileena in the fortress's dungeons. Afterwards, he fought her in the Armory before progressing his search of the sorcerer Quan Chi, who attacked his dear friend Orin.
The Armory returns in Mortal Kombat (2011). The Mortal Kombat logo in the background can be seen being lowered and taken out of a forge repeatedly during matches. One of the executioners is also seen forging a sword in the background.
- In MKII, when Reptile performs his Tasty Meal Fatality, the floor will move to the right. If the same move happens on the right side, the floor moves to the left
- In the N64 version of Mortal Kombat Trilogy, the game suffers a slowdown when a large number of sprites (i.e. blood and gibs) are generated onscreen.
- In Mortal Kombat: Armageddon, it has the same background music as the Lin Kuei Palace and the Obelisk training stage.
- In Armageddon, when the crusher death trap is used on Moloch or Goro, the only thing visible is their head when they are crushed, no body parts.