Dimensional Dungeons are dangerous places that consist mainly of Fabric of Reality and Stone Bricks. Within them, the daring and lucky adventurer can find chests containing objects such as Music Disks, Copper, Cocoa Beans and several rare items, including stacks of Fabric of Reality.
Dimensional Dungeons are entered via Rift Gateways, which spawn in the Overworld and Mystcraft Ages made of Stone Bricks, Cracked Stone Bricks, and Chiseled Stone Bricks. They are not terribly common, so keep your eyes open! They can be recognized by two three-block-high pillars with a Rift between them (note: Rifts are only visible from their 'active' side). When you walk into the Rift, it teleports you into a Dimensional Dungeon. Rifts that do not have doors placed on them can become unstable and no longer teleport players.
While You Are There
Dimensional Dungeons have small structures inside made of Stone Bricks. Within, on, and around these structures can be found other Dimensional Doors to take you onward and deeper into the dungeon. The maze-like rooms you come across can consist of Redstone traps, hidden areas, treasure chests, and sometimes even a hidden block of Diamond. Though dangerous, Dimensional Dungeons offer opportunities for exploration and for loot, as it is often easy to gather valuable materials from the chests.
The Dimensional Dungeons consist largely of Fabric of Reality. The blocks are solid black, so it is hard to tell them from air or a yawning pit at your feet. If you die while in a Dimensional Dungeon you are sent to Limbo, a dark place made of only Unraveled Fabric.
- If you stumble upon a piston trap, break through the wall and modify the Redstone contraption to your liking.
- Always be on the lookout for pressure plates and tripwires.
- If you hear TNT lighting, think before running away on instinct. More likely than not, you will end up activating a second trap (e.g., a TNT trap may also open a hole in the floor behind you).
- One way to find out if their really is ground under you, without the risk of jumping and possibly dying in the void, is to hold the SHIFT key while walking so that you will never walk off an edge. There are also rooms that look like holes but have treasure chests hidden under them, disguised with Fabric of Reality to try to convince you that it is a dead end.
- A bucket of water is a handy tool to bring with you. It can be used to test for solid floors, set off tripwires from a safe(r) distance, and wet TNT blocks to cancel their damage to chests, blocks, or even you. Always be ready to drop a bucket of water on the floor when going deeper into the dungeon as many traps involve the player spawning into a pocket dimension directly on top of a pressure plate.
- The use of an Ender Chest provides a convenient way to get collected loot out of a pocket dimension. A single chest can be used to store items so they will not be lost if you are killed, or a pair of chests can be used to safely teleport items to another location where they can then be removed automatically or by a cooperating player.
- Use blocks to brick up doors you have already traveled through or are known to be dangerous to use.
- Carry a few spare Warp Doors (or the materials to craft them) as an emergency escape measure, or to replace a Warp Door that has been destroyed by a TNT trap. Note that Transdimensional Trapdoors will deposit the player into the Void (and death) if they are too deep into the pocket dimension, and are therefore unreliable.