?

Host a server Get Modrinth AppModrinth App

Mods Resource Packs Data Packs Shaders Modpacks Plugins Servers

Unstable Underworlds plugin

This plugin allowed 1.21.11 paper servers to have the famous unstable SMP underworld region.

72downloads

3followers

72downloads

3followers

Compatibility

Minecraft: Java Edition

1.21.x

Platforms

Get your next server on Modrinth.

Get your next server on Modrinth.

Links

Tags

Creators

Details

Licensed ARR

Published yesterday

Updated yesterday

Description Gallery Changelog Versions

Modrinth is open source.

© 2026 Rinth, Inc.

About

News Changelog Status Careers Rewards Program

Products

Modrinth+Modrinth App Modrinth Hosting

Resources

Help Center Translate Report issues API documentation

Legal

Content Rules Terms of Use Privacy Policy Security Notice Copyright Policy and DMCA

NOT AN OFFICIAL MINECRAFT SERVICE. NOT APPROVED BY OR ASSOCIATED WITH MOJANG OR MICROSOFT.