CavesChaos: More Caves & Biomes

Explore dangerous new cavern systems across the Overworld. Greater challenges, unique loot, and total chaos await!

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About this Mod

CavesChaos Logo

CavesChaos is a NeoForge mod for Minecraft that introduces unique cave biomes to the Overworld. Unlike standard terrain, these biomes are exceedingly rare subterranean destinations, each filled with a variety of custom blocks, items, mobs, and mechanics. Currently, the mod features the Rusty Pulse - a massive industrial wasteland hidden deep beneath the surface.

CavesChaos Showcase

Available Versions

CavesChaos 1.1.2release

MC 1.21.1neoforge

June 13, 2026

CavesChaos 1.1.1release

MC 1.21.1neoforge

June 11, 2026

CavesChaos 1.1.0release

MC 1.21.1neoforge

June 10, 2026

CavesChaos 1.0.3release

MC 1.21.1neoforge

May 19, 2026

CavesChaos 1.0.2release

MC 1.21.1neoforge

May 18, 2026

How to Install CavesChaos: More Caves & Biomes on Your Server

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

Set neoforge Loader

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

Install Mod

Open the mod browser in the dashboard and search for "CavesChaos: More Caves & Biomes". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

neoforge

Minecraft Versions

1.21.1

Server-side

✓ Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

CavesChaos: More Caves & Biomes server crashes on startup – what to do?

Most common cause: wrong neoforge version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 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 CavesChaos: More Caves & Biomes compatible with neoforge?

CavesChaos: More Caves & Biomes officially supports neoforge for Minecraft 1.21.1. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with CavesChaos: More Caves & Biomes – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if CavesChaos: More Caves & Biomes 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.