Simple Caves Expansion Addon

Simple Caves Expansion Mod — an achievement-friendly cave biome addon that adds up to 9 new underground biomes using only vanilla blocks, so it feels like a natural “Caves & Cliffs” extension.

Simple Caves Expansion Mod is for players who love exploring underground but feel like caves start blending together after a while. The whole gimmick is smart: it adds up to nine cave biomes without introducing any new blocks or items. Instead, it remixes blocks that already exist in the base game to create underground areas that feel fresh while still looking and playing like vanilla Minecraft. The addon is intentionally “simple” in the best way—no weird modded materials to learn, no extra crafting trees—just new cave spaces that look like something the Cave and Cliffs update could have shipped with if it had a few more biomes.

Each biome has a clear identity and a reason to care. Jungle Caves are basically a mini jungle underground with lots of vegetation, which makes them clutch when you’re low on wood and don’t want to run back to the surface. Amethyst Caves are like a giant geode zone packed with Amethyst Clusters and Amethyst Buds, and the huge comfort feature is that monsters don’t spawn there, so it’s a calmer place to explore and gather. Pale Caves are framed as an underground pale garden that contrasts nicely with Lush Caves, so it’s more about atmosphere and variety than some huge mechanics change.



Some biomes are clearly meant to feel dangerous and rewarding. Black Caves are made from black concrete powder, black concrete, and blackstone, and the fog is black and dense, so visibility becomes part of the threat. The payoff is that diamonds and coal are more common there, making it a high-risk, high-reward mining spot. Tuff Caves are built from tuff and filled with spikes that make traversal risky, but iron and copper are more common, so it’s a strong biome for early-to-mid progression. White Caves use diorite and calcite and are loaded with iron, which makes them feel like a natural “iron hunting” destination when you’re trying to gear up fast.

Then you’ve got the more wild, themed spaces. Swamp Caves are chaotic caves with oak trees and giant red mushrooms, with occasional water patches, so they feel like a messy underground forest. Volcanic Caves go full hazard mode with basalt, blackstone, magma, spikes, and lots of lava, and they’re explicitly dangerous to explore—but redstone and coal generate most frequently there, so it’s a resource-focused reason to risk the heat. Mushroom Caves are made of mycelium, filled with giant mushrooms, and inhabited by Mooshrooms, and the big bonus is that no hostile mobs spawn there, making them another “safe-ish” underground biome you’ll actually want to find.

Simple Caves Expansion Mod is also positioned as part of a set: there’s a Simple Biomes Expansion for new overworld biomes and a Nether Biomes Expansion for the Nether, but this one is strictly about underground variety. If you want caves that feel more diverse while staying fully vanilla in materials and style—and you want it achievement friendly—Simple Caves Expansion Mod is exactly that kind of clean, exploration-first upgrade.

Installation:
— Download McPack
— Install McAddon or McPack files, just open it for this;
— Select new textures in the settings;
— Done.

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