Valley

Valley

A world-gen river and valley mod

by
3.5K Downloads
fabricforgeneoforgeadventureworldgen
Rent Server with this Mod

Screenshots

Two Rivers
River
River
Valley
Valley
Aerial

About this Mod

Example World-Gen with Valley + Other Mods

Valley

Valley is a world-gen mod that replaces vanilla rivers with ones that start inland and meander their way to the ocean.

This mod influences the terrain to generate in a more cohesive and natural-looking way creating beautiful rivers, valleys, ridgelines, and mountain chains. (And now that the rivers actually go somewhere, it makes possible a fun new form of navigation and exploration!).

Compatability

Valley is designed as a "drop-in" mod to use alongside other world-gen/biome mods and datapacks (eg Biomes'O'Plenty, Terralith, etc). Mods that entirely overhaul the world-generation or specifically change rivers or continents will probably not work with Valley.

See the gallery for some examples.

Server Setup

Valley can be installed on a modded server.
Clients do not need to have Valley installed in order to connect to the server.

Server setup steps:

  1. Make sure the server is not running!
  2. Install the Valley mod to your server's "mods" folder.
  3. If present, backup and remove the server's existing world.
  4. Launch the server allowing it to create a new world.
  5. Done!

Roadmap

This mod is in the early stages of development.
Our plans for future iterations include:

  • General refining of the default river/continent settings
  • Expose settings to make rivers and continents more easily configurable
  • Make it possible to distribute 'presets' that can override Valley's defaults
  • Provide GUI enhancements to allow user to preview changes before creating world

Permissions

You are of course free to use this mod in modpacks and to create content/media with it.
We only ask that you do not rehost the jar file.
Please reach out if you'd like us to host on other popular mod-hosting platforms.

Available Versions

Valley 0.1.0-BETA-a32f519beta
MC 1.21.10neoforge
November 12, 2025
Valley 0.1.0-BETA-a32f519beta
MC 1.21.5, 1.21.6, 1.21.7, 1.21.8, 1.21.9, 1.21.10forge
November 12, 2025
Valley 0.1.0-BETA-a32f519beta
MC 1.21.10fabric
November 12, 2025

How to Install Valley 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 (1.21.10).

3

Install Mod

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

Compatibility

Mod Loaders

fabricforgeneoforge

Minecraft Versions

1.21.10, 1.21.9, 1.21.8 (+3 more)

Server-side

Required

Recommended RAM

6 GB(min. 4 GB)

Frequently Asked Questions

Valley 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 (1.21.10). You can switch loaders with one click in the panel.

Is Valley compatible with fabric and forge and neoforge?

Valley officially supports fabric, forge, neoforge for Minecraft 1.21.10, 1.21.9, 1.21.8. 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 Valley – how to optimize performance?

Recommended RAM: 6 GB (per 5 players). Use /spark profiler to check if Valley 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 Valley with just one click on your server.

Recommended RAM
6 GBab €12/mo
Min. 4 GB | +1 GB pro 5 Spieler
Create Server Now
1-Click Mod Install
NVMe SSD Storage
DDoS Protection included

Details

License
LicenseRef-All-Rights-Reserved
Server-side
Required

Supported Versions

1.21.101.21.91.21.81.21.71.21.61.21.5