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. A Mortal Kombat symbol hangs in the center room. The Armory that is also part of Shao Kahn's Fortress debuted in Mortal Kombat II and subsequently appeared in Mortal Kombat Trilogy, Mortal Kombat: Tournament Edition, and Mortal Kombat Shaolin Monks.
In Mortal Kombat: Shaolin Monks, the Armory serves as the final stage as well as part of the Foundry in the game, leading to Shao Kahn's Arena. Fiery pits of molten metal abound all over the place and one 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 that is knocked onto it.In Armageddon's Konquest mode, Taven is exploring Shao Kahn's Fortress and is confronted by Mileena in the fortress' dungeons. He soon fought her in the Armory before continuing, moving forward in search of the sorcerer Quan Chi, who attacked Taven's dear friend Orin.
The Armory returns in Mortal Kombat (2011). The Mortal Kombat Logo in the background is 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 Armageddon, it has the same background music as the Lin Kuei palace and the Obelisk training stage.
- In MKII, when Reptile performs his Tasty Meal Fatality, the floor moves to the right.
- 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.
- In the N64 version of MK Trilogy, the game oddly suffers a slowdown when a large number of sprites (i.e. blood and gibs) are generated onscreen.