Spelunkery

Spelunkery

A cave overhaul mod with new cave variations, tool progression, and mining strategies to spice up your underground life.

by
2.0M Downloads
fabricforgeneoforgequiltadventureequipmentworldgen
Rent Server with this Mod

Screenshots

Dusty Corridor
Hot Spring
Sulfur Patches
Crevasse Carver
Channels and Sluices
Tuning Fork

About this Mod

Banner for the Spelunkery mod showing pink text on a dark cave-like background

Have you ever noticed how repetitive mining can be? Vanilla only has so much variation before it all starts to blend together. However, with Spelunkery your woes are no more!

A twisting gray-blue vine divider made by The Bobbu.

REQUIRES MOONLIGHT!

Spelunkery has three main goals:

To tweak material progression to enhance the experience of mining.

A demonstration of polishing Rough Cinnabar on a grindstone to polish it and produce redstone dust

An image of all of the variant ore types in the mod including support for other mods

To populate the underground with new landmarks, points of interest, and variations on ore generation to strengthen the variety of caves.

An image of a sandstone cave with a visible vein of sandstone lapis ore running through a wall

Naturally generated Raw Diamond Blocks adjacent to a lava pool

To provide novel and useful tools to create exciting experiences when mining or exploring.

Multicolored glowsticks showcasing compatibility with the Shimmer mod

A number of rope ladders hanging from an abandoned mineshaft

Vine divider stating
Spelunkery has been extensively tested for compatibility with No Man's Land and Create.

vine divider by The Bobbu stating

Details on all the features included in Spelunkery can be found on the wiki.

Vine divider stating

Vine divider by the Bobbu

Spelunkery is best paired with:

Would Verdant Grounded Oxide

**]()

Available Versions

Spelunkery 1.21.1-0.4.3release
MC 1.21.1neoforge
June 18, 2026
Spelunkery 1.21.1-0.4.3release
MC 1.21.1fabric
June 18, 2026
Spelunkery 1.21.1-0.4.2release
MC 1.21.1neoforge
May 27, 2026
Spelunkery 1.21.1-0.4.2release
MC 1.21.1fabric
May 27, 2026
Spelunkery 1.21.1-0.4.1release
MC 1.21.1neoforge
May 13, 2026

How to Install Spelunkery on Your Server

1

Order Server

Order a Minecraft Java server with at least 4 GB RAM (6 GB recommended).

2

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.1).

3

Install Mod

Open the mod browser in the dashboard and search for "Spelunkery". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

fabricforgeneoforgequilt

Minecraft Versions

1.21.1, 1.20.1, 1.19.2

Server-side

Required

Recommended RAM

6 GB(min. 4 GB)

Frequently Asked Questions

Spelunkery server crashes on startup – what to do?

Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 4 GB RAM is allocated and the loader matches the mod version (1.21.1). You can switch loaders with one click in the panel.

Is Spelunkery compatible with fabric and forge and neoforge and quilt?

Spelunkery officially supports fabric, forge, neoforge, quilt for Minecraft 1.21.1, 1.20.1, 1.19.2. Note: Forge and Fabric mods are NOT cross-compatible – pick one loader and stick with it. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Spelunkery – how to optimize performance?

Recommended RAM: 6 GB (per 5 players). Use /spark profiler to check if Spelunkery consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.

Rent Modded Server

Install Spelunkery with just one click on your server.

Recommended RAM
6 GBfrom €7.800000000000001/mo
Minimum 4 GB | per 5 players
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1-Click Mod Install
NVMe SSD Storage
DDoS Protection included

Details

License
GNU Lesser General Public License v3.0 only
Server-side
Required

Supported Versions

1.21.11.20.11.19.2