Custom Default World Preset

This simple fabric mod allows you to change the default world preset.

58.7K Downloads

fabricneoforgequiltmanagementutilityworldgen

Rent Server with this Mod

About this Mod

Custom Default World Preset

This simple fabric mod allows you to change the default world preset.
This mod is intended for modpack developers who want a custom world without replacing the default and without making users change the setting.

To configure the default world preset you edit the default_world_preset.txt file in your config directory.
It should contain the id of the desired default preset. The minecraft: prefix may be omitted.
The configuration is read each time the key is used, so changes should show up be reopening the world creation screen.

This mod also changes the default on dedicated servers. You need to ensure that the preset is loaded in the initial datapacks for this to work.
Most global datapack mods should work for this.

Available Versions

v1.1.0 [26.1-snapshot-1]release

MC 26.1-snapshot-1fabric, neoforge

December 25, 2025

v1.0.5 [1.21.11]release

MC 1.21.11fabric, quilt

December 22, 2025

v1.0.4 [1.21.4]release

MC 1.21.4, 1.21.5, 1.21.6fabric, quilt

May 21, 2025

v1.0.3 [1.21]release

MC 1.21, 1.21.1fabric, quilt

June 29, 2024

v1.0.2 [1.19.3]release

MC 1.19.3, 1.19.4, 1.20, 1.20.1, 1.20.2, 1.20.3, 1.20.4, 1.20.5fabric, quilt

May 31, 2023

How to Install Custom Default World Preset on Your Server

Order Server

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

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (26.1-snapshot-1).

Install Mod

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

Compatibility

Mod Loaders

fabricneoforgequilt

Minecraft Versions

26.1-snapshot-1, 1.21.11, 1.21.6 (+13 more)

Server-side

✓ Required

Recommended RAM

6 GB(min. 4 GB)

Frequently Asked Questions

Custom Default World Preset 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 (26.1-snapshot-1). You can switch loaders with one click in the panel.

Is Custom Default World Preset compatible with fabric and neoforge and quilt?

Custom Default World Preset officially supports fabric, neoforge, quilt for Minecraft 26.1-snapshot-1, 1.21.11, 1.21.6. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Custom Default World Preset – how to optimize performance?

Recommended RAM: 6 GB (per 5 players). Use /spark profiler to check if Custom Default World Preset 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.