Underground Wonders

a minecraft mod that adds the sewers and late game items for the early game

1.5K Downloads

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Rent Server with this Mod

Screenshots

About this Mod

UNDERGROUND WONDERS

(aka the sewers mod but its too late now)

it has:

the sewers (a structure made in 20 minutes, contains loot)
a totally epic music disc!!!!!!!!!!!!!!
building blocks and things
sewer ingot
sewer armor & pickaxe
sewer dimension with a new biome
the plumber villager
a terrible potion that somebody might want to use

Available Versions

Underground Wonders 1.1release

MC 1.20.1forge

December 31, 2023

Underground Wonders 1.0.2release

MC 1.20.1forge

December 20, 2023

Underground Wonders 1.0.1release

MC 1.20.1forge

December 20, 2023

How to Install Underground Wonders on Your Server

Order Server

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

Set forge Loader

In the panel under "Egg", select the forge loader and matching Minecraft version (1.20.1).

Install Mod

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

Compatibility

Mod Loaders

forge

Minecraft Versions

1.20.1

Server-side

✓ Required

Recommended RAM

6 GB(min. 4 GB)

Frequently Asked Questions

Underground Wonders server crashes on startup – what to do?

Most common cause: wrong forge 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 (1.20.1). You can switch loaders with one click in the panel.

Is Underground Wonders compatible with forge?

Underground Wonders officially supports forge for Minecraft 1.20.1. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Underground Wonders – how to optimize performance?

Recommended RAM: 6 GB (per 5 players). Use /spark profiler to check if Underground Wonders 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.