KesseractJS

KesseractJS

A fork of the 1.16.5 version of KubeJS, maintained and extended

by
790 Downloads
fabricforgequiltgame-mechanics
Rent Server with this Mod

About this Mod

KesseractJS

Welcome to the 4th dimension.

cf
actions

logo

KesseractJS is a fork of KubeJS, continuing its development for 1.16.5. It backport a lot of different features from the newer versions, and even adds some that are not present at all in the original mod. The latter are documented on a dedicated wiki, and support for those are offered on our discord server, so don't be afraid to ask there.

This mod depends on a modified fork of the Rhino JS parser called Rhizo, please install it before use. We also highly recommend you use ProbeJS Legacy during script development for better IDE support.

This project was made as a collaboration between Hellish Mods, ZZZank, and MundM2007, with the occasional help from Team Potato. Thank you guys <3

Feature showcase

  • Fake mod registration
// In startup_scripts
Platform.registerFakeMod("notarealmodid").displayName("Hello World!")
onEvent('item.registry', event => {
	event.create('notarealmodid:thing')
})

screenshot

  • Backports
// Welcome to the future babyyyy

// Falling block type
onEvent('block.registry', event => {
    event.create('metal_pipe').material('falling')
})
// Custom music discs (https://github.com/KubeJS-Mods/KubeJS/issues/491)
onEvent('item.registry', event => {
    event.create('disc_14').song('jamiroquai:vitrual_insanity')
})
// thickTexture/thinTexture and textureThick/textureThin intercompatibility
onEvent('fluid.registry', event => {
  event.create('you_dont_want_to_know')
    .thickTexture(0xFF0000)
    .textureThick(0xFF0000) // Both methods work!
})
// JsonIO
let data = JsonIO.read('kubejs/data.json')
JsonIO.write('kubejs/data.json', {recursion: data})

// + more!
  • Fixes. Lots of 'em.

screenshot

  • Full drag-and-drop compatability with old Kube scripts
  • Continuous updates. More in the future!

MMLogo

Available Versions

KesseractJS Forge 1605.3.20-build.81release
MC 1.16.4, 1.16.5forge
March 7, 2025
KesseractJS Fabric 1605.3.20-build.81release
MC 1.16.4, 1.16.5fabric, quilt
March 7, 2025
KesseractJS Forge 1605.3.20-build.73release
MC 1.16.4, 1.16.5forge
March 2, 2025
KesseractJS Fabric 1605.3.20-build.73release
MC 1.16.4, 1.16.5fabric, quilt
March 2, 2025
KesseractJS Forge 1605.3.20-build.69release
MC 1.16.4, 1.16.5forge
January 19, 2025

How to Install KesseractJS 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 (1.16.5).

3

Install Mod

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

Compatibility

Mod Loaders

fabricforgequilt

Minecraft Versions

1.16.5, 1.16.4

Server-side

Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

KesseractJS 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 (1.16.5). You can switch loaders with one click in the panel.

Is KesseractJS compatible with fabric and forge and quilt?

KesseractJS officially supports fabric, forge, quilt for Minecraft 1.16.5, 1.16.4. Note: Forge and Fabric mods are NOT cross-compatible – pick one loader and stick with it. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with KesseractJS – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if KesseractJS 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 KesseractJS 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
GNU Lesser General Public License v3.0 only
Server-side
Required

Supported Versions

1.16.51.16.4