
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.
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
- Enter a valid world seed.
- Enable ore prediction.
- 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
How to Install OreSim on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 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 "OreSim". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.11
Server-side
✗ UnsupportedRecommended 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.