Deep dungeons or endless dungeons are ever-changing dungeons whose architectures are never quite the same each time players enter to explore their depths. All players will begin at a reduced level, and only by fighting the enemies within will they be able to gain the strength and experience needed to reach the final floor.
List of deep dungeons
- Palace of the Dead is the first deep dungeon released in patch 3.35. Located in The Black Shroud, Palace of the Dead features 200 floors. Players begin at level 1, and may attain up to level 60. Upon clearing floor 50, players may begin at floor 51 and level 60.
- Heaven-on-High is the second deep dungeon, released in patch 4.35. Located in The Ruby Sea, it has 100 floors. Players begin at level 60, and may attain up to level 70. Upon clearing floor 30, players may begin at floor 21 and level 70.