OreSim

OreSim

Ore Sim is a client-side utility that simulates Minecraft's ore generation from a known world seed and visualizes the predicted ore positions in the world.

by
19 Downloads
fabric
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About this Mod

Ore Sim

Ore Sim is a client-side utility that simulates Minecraft's ore generation from a known world seed and visualizes the predicted ore positions in the world.

Given a world seed, the mod re-runs Minecraft's vanilla ore placement algorithm locally and highlights where ores are expected to generate. Various rendering and performance settings allow you to customize how predictions are displayed.

Features

  • Predicts ore locations from a world seed

  • Supports the following ores:

    • Coal
    • Iron
    • Gold
    • Redstone
    • Diamond
    • Lapis Lazuli
    • Copper
    • Emerald
    • Nether Quartz
    • Ancient Debris
  • Adjustable render distance

  • Fade and visibility controls

  • Configurable performance budget

  • In-game configuration screen

  • Rebindable keybinds

  • Settings persist between game sessions

  • Commands for:

    • Entering or changing the seed
    • Toggling predictions on and off
    • Listing nearby predicted ore locations

Usage

  1. Enter a valid world seed.
  2. Enable ore prediction.
  3. Explore the world while Ore Sim visualizes the predicted ore generation positions.

Disclaimer

This is a client-side tool designed for single-player worlds, educational purposes, and seed analysis.

Using this mod to gain an advantage on multiplayer servers may violate server rules. Always respect the policies of the servers you play on.

Available Versions

OreSim 1.0.0release
MC 1.21.11fabric
June 9, 2026

How to Install OreSim on Your Server

1

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

2

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.11).

3

Install Mod

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

Compatibility

Mod Loaders

fabric

Minecraft Versions

1.21.11

Server-side

Unsupported

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

OreSim 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 3 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 OreSim compatible with fabric?

OreSim officially supports fabric for Minecraft 1.21.11. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with OreSim – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if OreSim 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 OreSim with just one click on your server.

Recommended RAM
4 GBab €8/mo
Min. 3 GB | +1 GB pro 8 Spieler
Create Server Now
1-Click Mod Install
NVMe SSD Storage
DDoS Protection included

Details

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

Supported Versions

1.21.11