Dungeon can be characterized by a vast underground maze of Bricks. This Environment is spawned at the time of World Creation and its entrance is from a structure that is very similar to a castle. Several placed items can be collected from here that can be later used in the game.
The unique item drops of this Environment are:
- Bone- Dropped from Angry Bones, CursedSkull and Dark Caster.
- Golden Key- Pots, Dungeon Slimes and Chests.
- Book- Can be retrieved from the Environment by using a Hammer.
- Dungeon Brick- Can be retrieved from the Environment by using a Hammer.
- Dungeon Brick Wall- Can be retrieved from the Environment by using a Hammer.
- Dart Trap- Can be retrieved from the Environment by using a Hammer.
- Pressure Plate- Can be retrieved from the Environment by using a Hammer.
- Wire- Can be retrieved from the Environment by using a Hammer.
- Spike-Can be retrieved from the Environment by using a Hammer.
- Water Candle- Can be retrieved from the Environment by using a Hammer.
- Chain Lantern- Can be retrieved from the Environment by using a Hammer.
- Switch- Can be retrieved from the Environment by using a Hammer.
- Water Bolt- Can be retrieved from the Environment by using a Hammer.

