Random Block World

Every block in the world is random

2.4K Downloads

fabriccursedworldgen

About this Mod

This mod completely changes how Minecraft worlds generate by randomizing nearly every block in the game. When a world is created, blocks are replaced with other random blocks, turning familiar terrain into something unpredictable and challenging.

To keep the game playable and progression intact, certain critical blocks are excluded from randomization. End Portal Frames and Spawners always generate normally, ensuring that strongholds, the End, and mob-based mechanics still function as intended.

Created originally for Baablu

Simply install the mod and put it in your mods folder

Available Versions

RandomBlocks 1.0.0release

MC 1.21.10, 1.21.11fabric

January 29, 2026

How to Install Random Block World 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 (1.21.11).

Install Mod

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

Compatibility

Mod Loaders

fabric

Minecraft Versions

1.21.11, 1.21.10

Server-side

✓ Required

Recommended RAM

6 GB(min. 4 GB)

Frequently Asked Questions

Random Block World 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 (1.21.11). You can switch loaders with one click in the panel.

Is Random Block World compatible with fabric?

Random Block World officially supports fabric for Minecraft 1.21.11, 1.21.10. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Random Block World – how to optimize performance?

Recommended RAM: 6 GB (per 5 players). Use /spark profiler to check if Random Block World 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.