
Nico’s Cave Expansion
Nico's Cave Expansion enriches your Minecraft underground adventures by adding numerous new cave types filled with unique mobs, blocks, plants, foods, ores, and gear. Explore diverse subterranean environments enhanced with custom features that deepen gameplay and discovery.
Installation
To install Nico's Cave Expansion, download the add-on files compatible with your Minecraft Bedrock Edition version and import them through the game’s Add-Ons menu. Ensure the add-on is enabled in your world settings before starting your adventure.
Compatibility
- Requires Minecraft Bedrock Edition version 1.21.120 or newer for full functionality.
- Latest update (v1.9.5) requires Minecraft 1.21.40 or higher.
- Older versions may not update properly to newer releases within existing worlds.
Key Features
- Introduces multiple new cave biomes with distinct vegetation and geological features.
- Adds new mobs such as Glowbird, Mossy Skeleton, Crystalmite, Myceling, and Glowceling with unique behaviors and spawn conditions.
- Includes new blocks like Mosshroom Door, various custom walls, new plant types, and functional light-emitting blocks with local lighting effects.
- New equipment and items including custom spears made from Tin, Zinc, Bronze, Brass, and Olivine.
- Enhanced world generation with improved ore patch rates, vegetation density adjustments, and realistic spawn rules for custom mobs and blocks.
- Visual improvements with PBR texture support and emissive texture tuning for several blocks and items.
- Technical updates optimizing compatibility and fixing bugs related to block placement, mob interactions, and in-game mechanics.
Notes
- Custom mobs now have improved AI, including breeding behaviors and spawn restrictions to custom biomes and caves.
- Some blocks and plants are instantly replaceable when placing other blocks, improving building convenience.
- Custom blocks generally support redstone interactions, piston behavior, and precipitation effects.
- Several recipes were added or fixed, including crafting of bricks and lanterns using custom materials.
- Mobs such as tamed Mossy Skeletons have expanded equipment options and behavior tweaks for better gameplay.
How to Use
Once installed and enabled, explore underground areas to discover newly generated cave biomes. Collect new ores and materials to craft unique tools and equipment. Interact with new mobs and utilize added blocks to customize your builds. Use Spawn Eggs in Creative Mode to summon baby or adult custom mobs.

Updates progressively improve world generation, visuals, and mob mechanics to ensure an immersive and balanced experience.