Ksyxis

Mod

by VidTu

Speed up your world loading by removing unneeded chunks.

Type

Mod

CurseForge Downloads

11,243,151

CurseForge ID

537533

Modrinth Downloads

9,100,941

Modrinth ID

2ecVyZ49

Last Updated

Nov 7, 2026

Description

Ksyxis

Speed up your world loading by removing unneeded chunks.

Language

English (Extended Version)
Русский

Downloads

Dependencies

Fabric, Forge, NeoForge, Quilt, Legacy Fabric, or Ornithe
Minecraft (1.8 or newer)
Forge 1.8-1.14.4 only: Any Mixin provider, at your choice (such as MixinBootstrap, MixinBooter, UniMixins, or any other)

About

Depending on your game version, Minecraft loads some chunks when you create your world. Sometimes, these chunks are always loaded in the background. Either way, whether these chunks being loaded is a one-time performance slowdown, or a constant performance penalty, most players don't need any of these chunks. This mod completely disables unneeded chunks in the game.

Note: Unneeded chunks are sometimes used by farms and technical contraptions. If you'll need these chunks, you can always delete the mod later to re-enable these chunks.

A demonstration GIF of world loading speed improvements with Ksyxis

Versions

Version	Effect	Note
1.21.9+	Insignificant	A 7x7 area of chunks won't be loaded around the player when they join, and a fake 500ms world creation delay in single-player will be removed.
1.20.5-1.21.8	Low	A 5x5 area of spawn chunks won't be loaded constantly in the background.
1.8-1.20.4	Extreme	A 21x21 area of spawn chunks won't be loaded constantly in the background.

FAQ

Q: I need help, have some questions, or have some other feedback.
A: You can join the Discord server.

Q: Where can I download this mod?
A: CurseForge, Modrinth, or GitHub Releases. You can also find unstable builds at GitHub Actions. You will need a GitHub account to download these.

Q: Which mod loaders are supported?
A: Fabric, Forge, NeoForge, Quilt, Legacy Fabric, and Ornithe.

Q: Which Minecraft versions are supported?
A: Minecraft versions 1.8 and newer.

Q: Why support so many Minecraft versions?
A: Because I can.

Q: Do I need Fabric API or Quilt Standard Libraries?
A: Not necessarily.

Q: Where are the Fabric, Forge, NeoForge, Quilt, etc. versions?
A: All in the same file.

Q: Is this mod client-side or server-side?
A: This mod works on the server and on the client in singleplayer. It has no effect on the client when playing multiplayer.

Q: Is this mod stable for use?
A: Should be fine. If it breaks something, just delete it and your worlds will be fine.

Q: I've found a bug.
A: Report it here. If you are not sure whether this is a bug or a simple question, you can join the Discord. Report security vulnerabilities here.

Q: Can I use this in my modpack?
A: Sure. Credit (e.g., a link to the mod's GitHub page) is appreciated but is not required. Monetization and redistribution are allowed as per the MIT License.

Q: This mod doesn't speed up anything.
A: The effect may not be noticeable on high-end PCs. This mod is designed primarily for low-end devices. Nevertheless, there is a video.

Q: How to force-load chunks if the spawn chunks have been removed?
A: If you really need to force-load chunks, load individual chunks with the /forceload command in 1.13 or newer. For older versions, you can search for some mod that force-loads chunks.

Q: It says Ksyxis: No Mixin found.
A: If you're using Forge 1.15.2 or older, you may need to install MixinBootstrap, MixinBooter, UniMixins, or any other Mixin provider of your choice. If you're using Forge 1.16 or newer, or any version of Fabric/NeoForge/Quilt/Ornithe, you don't need to install anything, and this is a bug.