Why KubeJS is a top-tier mod mod for Minecraft 1.21.1
Edit recipes, add new custom items, script world events, all in JavaScript!
⚙️ Quick Resource Specs
| Mod Creator | Lat |
| Latest Version | 1.21.1 |
| Supported Game Versions | 1.21.1, 1.21, 1.20.4, 1.20.1, 1.19.2 |
| File Size | 512.11 KB |
| Last Updated | |
| Total Downloads | 158,007,843 downloads |
KubeJS
What does this mod do?
This mod lets you create scripts in JavaScript language to manage your server, add new blocks and items, change recipes and tags, add custom handlers for quest mods, change worldgen and more!
How to use it?
Run the game with mod installed once. It should generate kubejs folder in your minecraft directory with example scripts. startup scripts only get run once when the game loads. Those are for registering items, setting up configs etc. Server/data scripts are loaded when you join a world, those are better for things like clearlag, displaying custom login messages and world/player related things in general.
Video tutorial for 1.19.2
Can I reload scripts?
Yes, use /reload. Note: Not everything is reloadable. Some things require you to restart game, some only world, some work on fly.
I don't know JavaScript / I need help with this mod!
There's examples and pre-made scripts on KubeJS Wiki.
I have a question / suggestion / bug report!
If wiki didn't have the answer for what you were looking for, you can ask questions, make feature suggestions and report bugs here: KubeJS Support
The Ultimate Guide to KubeJS
If you are exploring the vast world of Minecraft modifications, KubeJS by Lat is a standout mod that deserves your attention. With over 158,007,843 downloads, it has become a staple for players looking to enhance their experience. As the creator describes it, this project is "Edit recipes, add new custom items, script world events, all in JavaScript!". Whether you are a veteran builder constructing massive cities, or simply a casual player looking to upgrade your survival world, this guide will provide you with all the essential details on how KubeJS alters the game.
What Makes It Special?
Unlike standard mods that simply alter superficial elements, KubeJS introduces a wide array of visual and mechanical features designed to seamlessly blend into the vanilla aesthetic. Lat has clearly spent significant time refining the project to ensure that every aspect feels polished and responsive for version 1.21.1.
Installation Guide
Getting KubeJS up and running is straightforward. Follow these step-by-step instructions:
- Verify Your Version: Ensure your Minecraft launcher is set to version 1.21.1.
- Install Mod Loader (if required): If this is a mod, download the compatible loader (Forge, Fabric, NeoForge).
- Download the File: Click the secure download button above to retrieve the official file from CurseForge.
- Move the File: Place the downloaded file into your `mods`, `shaderpacks`, or `resourcepacks` folder depending on the mod type.
- Launch and Enjoy: Open Minecraft, navigate to the respective settings menu, and activate KubeJS.
Compatibility & Performance
Compatibility is robust. KubeJS is designed specifically for version 1.21.1, taking full advantage of the latest engine optimizations. During typical gameplay, this addition maintains a stable frame rate, though lower-end laptops might experience slight stuttering. We recommend pairing this with performance boosters like Sodium or Iris to guarantee a silky-smooth experience.