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This article could be improved by adding an image of fully built Oubliette.
Please insert an existing image or if necessary, upload a new one and then insert that one.

For a list of all items and upgrades within the Construction skill, see Construction/All milestones.

An Oubliette is a room designed to be built below the Throne Room in conjunction with the Throne Room trap in a player-owned house. It can be built at level 65 Construction with 150,000 coins.

There are 6 hotspots available:

  • Floor - Attacks and injures anyone unfortunate enough to have fallen in the cage through the throne room or via a teleport trap from the dungeon.
  • Prison - Prevents escape from the trap, allowing more damage to be inflicted. Players must pick or force the lock. Note: If you remove your cage, you will lose the cage AND anything inside it.
  • Guard - Attacks any players during PvP (player-versus-player) or challenge mode.
  • Ladder - Allows access to the throne room if it is there.
  • Decoration - Ornamentation.
  • Lighting - Ornamentation.


The centre floor is where players fall into from a Throne Room.

Item Image Level Materials Experience
Spikes Spikes icon 65 20 Steel bars, 50,000 coins 623
Tentacle pool Tentacle pool icon 71 20 Buckets of water, 100,000 coins 326
Flame pit Flame pit icon 77 20 Tinderboxes, 125,000 coins 357
Rocnar Rocnar icon 83 150,000 coins 387

Note: You can now build the Rocnar, flame pit, and spikes without a cage. However, it is impossible to remove/upgrade the cage without also removing its contents. The tentacle pool still needs a cage to be added. Note that it is not possible to voluntarily step into a cage, and therefore the tentacle pool is unsuited for players who desire to use the oubliette as a way to kill themselves quickly (restoring all stats).


To hold players dropping from a throne room above. Players have to pick the lock (using Thieving) of the gate, or force the lock (using Strength) of the gate, to get out. The stronger the cage, the harder it will be for players to escape. If a player tries to enter the cage voluntarily (for example by attempting to pick the lock from the outside) the game will stop them.

Item Image Level Materials Experience
Oak cage Oak cage icon 65 10 Oak planks, 2 steel bars 640
Oak and steel cage Oak and steel cage icon 7010 Oak planks, 10 steel bars 800
Steel cage Steel cage icon 75 20 Steel bars 400
Spiked cage Spiked cage icon 80 25 Steel bars 500
Bone cage Bone cage icon 85 10 Oak planks, 10 Bones 603


The tea boosts can be used when creating guards, but the crystal saw cannot.

Name Image Level Cost Experience Combat level
Skeleton guard Skeleton guard icon 70 50,000 Coins 223 22
Guard dog Guard dog icon 74 75,000 Coins 273 44
Hobgoblin Hobgoblin guard icon 78 100,000 Coins 316 48
Baby red dragon Baby red dragon icon 82 150,000 Coins 387 64
Huge spider Huge spider icon 86 200,000 Coins 447 81
Troll guard Troll guard icon 90 1,000,000 Coins 1000 95
Hellhound Hellhound icon 94 5,000,000 Coins 2236 122


Ladder back up to throne room above (if present).

When challenge mode is turned on (using the lever in the throne room) then only the house owner can go up the ladder.

Item Image Level Materials Experience
Oak ladder Oak ladder icon 68 5 Oak planks 300
Teak ladder Teak ladder icon 78 5 Teak planks 450
Mahogany ladder Mahogany ladder icon 88 5 Mahogany planks 700


Item Image Level Materials Experience
Decorative blood Decorative blood icon 72 4 Bottles of red dye 4
Decorative pipe Decorative pipe icon 83 6 Steel bars 120
Hanging skeleton Hanging skeleton icon 94 2 Skulls, 6 bones 3


Item Image Level Materials Experience
Candle Candles (oubliette) 72 4 Oak planks, 4 lit candles 243
Torch Torches (oubliette) 84 4 Oak planks, 4 lit torches 244
Skull Torch Skull torches icon 94 4 Oak planks, 4 lit torches, 4 skulls 246


  • One of the traps players can add is called a "Rocnar", which when spelt backwards becomes "rancor". This was a monster from Star Wars episode 6, which tried to kill the protagonist Luke Skywalker.
  • The hanging skeleton requires two skulls to build, although there are four hanging skeletons in the room.
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