Not to be confused with the Tree House Den, Cosmo's Tree House, or Andrews Dungeon of Doom.

Cosmo Den

Cosmo's Den is a members-only land den that was released on December 19, 2013. It was formerly sold at the Diamond Shop for 5 diamonds.


On the inside, both floors have small cracks filled with flowing water. There are also built-in wooden shelves on the walls. There is a staircase made of leaves between floors. The wallpaper usually turns plant-themed. The flooring turns into carpets that are placed in various different sections of the den. There is a small stream flowing from upstairs to downstairs, which flows into a puddle at the corner with lilies and lily pads. Outside, there is a big field. 


  • This den is featured in the Meet Cosmo adventure and appears to be part of a giant tree.
  • The flooring is shown in rugs and mats that cover the ground, instead of one continuous floor. This is the first known den to have this feature.
  • During the Denstravaganza event, it only cost 3 diamonds.
  • The outside entrance is similar to the entrance to the Enchanted Hollow den.
  • Although it is much bigger, it only has one entrance, unlike the one in the adventure.
  • There is a possibility that this den will not return to the Diamond Shop, as a newer Cosmo-based den has been released


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Unique Patterns

Wall Patterns

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Floor Patterns

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