Cave Update Add-on

Cave Update Add-on

Explore new underground biomes, encounter new cave themed creatures. fight a new boss, be spooked by classic cave sounds and more in the Cave Update Add-on! This add-on adds many very needed additions to caves to make them exciting again. Check back for updates as more will be added in the future!

Enable Experimental Gameplay!

New Cave Biomes:

Underground Desert:

The underground desert generates underneath both desert biomes and mesa biomes. Features special desert stone and desert colored ores.

Underground Jungle:

The underground jungle generates under jungle biomes. Features unique mossy stone patches and more plant life to give it a more jungle feel. Beware, dangerous monsters spawn here.

Underground Tundra:

Generates under tundra and ice spike biomes. Features special ice stone and large patches of packed ice and rare blue ice farther down.

New Hostile Mobs:

Undead Miner:

The undead remains of unlucky villager miners. They are a dangerous foe on account of their pickaxes. Drops bones and rarely ingots. Found underground below Y=40 or in abandoned mineshafts.

Brood Spider:

Large spiders that carry their brood on their abdomen, waiting to sick hordes of spiderlings your way. They are rare but pose a significant threat to early players when encountered, similar to endermen. Keep your distance when possible. Drops string, spider eyes, and a spider heart used to craft the boss spawn. Found underground everywhere and in higher levels in the jungle.

Spider Eggs:

Spider eggs don’t pose a direct threat themselves and in fact, can offer loot when destroyed. However, they also release several spiderlings when broken in addition to their treasure. Spider eggs are found in Spider Nests that generate periodically underground. Treasure consists of cave themed items.


Small baby spiders spawned by Brood Spiders, Spider Eggs, and the Spider Matriarch. While they pose little threat by themselves, they are dangerous in numbers.

Bristle Spider:

A ranged spider that accompanies the Spider Matriarch during the boss battle. It fires a slew of bristles at the player.

More creatures are to be added in Future Updates…

New Passive Mobs:

Ore Crawler:

These little arthropods are found everywhere underground and drop their respective ore when killed. They run from the player, so you have to be quick! So far only coal has been implemented, but others will be added in the next update.

Villager Miners:

These poor villagers have become trapped and need your help to rescue them! They are found trapped in webs underground and you free them by punching the webs off. They are weak and require food to get the strength to follow you. Once you feed them, they will need to be lead back to the nearest village where they will reward you with XP and become a Miner themed Villager. They use any work stand that other villagers use and trade miner themed items.

More creatures are to be added in Future Updates…

New Boss Mob:

Spider Matriarch:

This Spider Matriarch is the largest of the bunch and is not in the best mood when summoned. To summon the Spider Matriarch, one must craft the Spider Matriarch summon using 4 Spider Hearts and 5 string. Use it on any spider to turn it into an egg that will grow until bursting, summoning the boss. The Spider Matriarch has 275 HP and switches between two attack modes depending on how far she is from her target. In ranged mode, she summons reinforcements in the form of spiderlings, brood spiders, and bristle spiders. She will periodically fire bristles at the player in this mode as well. When in Melee mode, she will summon only spiderlings but will also charge the player. A shield, a bow, and at least iron armor and sword are strongly recommended for this fight. The Spider Matriarch drops large amounts of cave related items including a boss trophy to display in your house.

Re-Addition of Java Cave Sounds:

If you’ve played the Java Edition or used to play the Legacy Console Edition, you’ll probably remember being spooked once or twice by the cave sounds that would periodically play. I was frankly disappointed by their removal from the Bedrock Edition so I re-added them here. All of them have been added, including several unused ones too. They break up the monotony of mining.  

Even more stuff…

There are many more small additions added in various areas throughout the underground. Prismarine shard and crystal ore in ocean biomes, more blocks, prismarite ingots, edible spider hearts, etc…

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