Randomized Dungeons are locations (intended for groups of 4 to 6 players) full of valuable treasure and dangerous enemies, providing great rewards to those who can fight their way through them. They are found all throughout the world in zones of Tier 4 and above, but aren't visible on the map and don't stay in the same places for long. Their challenges and rewards match the tier of the zone they are found in.
These dungeons are created procedurally based on numerous parameters, influencing the mob types, layout, and quality of loot found within. Each dungeon lasts only for a limited time, and is accessible to any player who discovers it, providing an incentive to clear them out quickly and completely. In addition to their unpredictable structures, these realms feature special shrines and dungeon chests.
Hidden Entrances are the gateways to these dungeons. As their locations are not revealed on the minimap and they are detectable by all players, they bring spontaneity and unpredictability to Albion's open world. Harder types of Hidden Entrances can also be accessed via Dungeon Maps, which offer a party first rights to an otherwise unseen entrance, that lead to dungeons of greater-than-normal difficulty and rewards.
The tier of the mobs inside of Hidden Entrances depends on the tier of the map in which they are found. The exceptions are Hidden Entrances spawning inside of Regular Dungeons; they are one tier higher than the Regular Dungeon.
Entering a Hidden Entrance means that you will find this faction inside. The faction which the Regular Dungeon belongs to dictates the faction of the mobs within the inner Hidden Entrances.
These Entrances will have some form of light source set up around them. These provide a helpful guide to players; when a player hasn't entered a particular Random Dungeon, the light sources will be lit. Once visited, the light sources at the Hidden Entrance will no longer be lit, providing a useful marker for whether a player has already been in that dungeon.
The light sources will not alert you if another party is inside the dungeon. It is linked only to the personal character viewing the dungeon having visited it.