
Modrinth · Minecraft mod
Eslium
Predicts server actions - general latency/ping effects optimizer
Quick answer
Which Eslium release matches 1.21.10 Quilt?
Eslium 2.7.1 targets 1.21.9, 1.21.10 with Fabric, Quilt. Installation on the client is optional. Installation on the dedicated server is optional. No extra mods listed for this file.
Where it goes
Is Eslium required on the client, server, or both?
Installation on the client is optional. Installation on the dedicated server is optional.
The source marks this as usable on both the client and server.
What else does Eslium 2.7.1 need?
2.7.1 on 1.21.10 Quilt. Every mod below is checked against that same setup.
This file does not list any required mods. Do not add a library just because a different file uses it.
This file does not list any required or optional mods.
Before you install it
Add Eslium without breaking your instance.
Built for Eslium 2.7.1 on 1.21.10 Quilt. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use 2.7.1. It targets 1.21.9, 1.21.10 with Fabric, Quilt; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
This file does not list any required mods. Do not add a library just because a different file uses it.
- 03
Put it on the correct side
Installation on the client is optional. Installation on the dedicated server is optional.
- 04
Pick the file you checked
Use the “Get this file” button beside 2.7.1. It opens that exact file at the source.
About this project
What does Eslium add?
Eslium is a project to predict more things client-side.
For example, if you want to use a Crystal, you must wait for the server validation for it to appear.
This mod fixes that and therefore compensates for the ping.
Predictions implemented
Minecarts
When using any type of minecart on a rail, the spawn of the minecart is predicted
End Crystal
When using an end crystal on obisidian or bedrock, the spawn of the end crystal is predicted
Predictions Coming Soon™ :
- Lunge enchant
- Cooldowns
- Consumables
- Elytra
- Firework rocket
- Swap
- Inventory
- Entity pose
- Wind charge
- Jukebox
- Crossbow
- Pickup entities
- Trident
- Weapons
- Jukebox
- Bottle o' Enchanting
- Experience
- Ender Pearls
- Potions
- Pick Block
- Cactus damage
- Bed
- Fishing Rod
- Lead
- Boat
- Snowball
- Spawn Eggs
- Egg
- Armor Stand
- Note block
- Item frame
- Dyes
- Interfaces
- Void damage
- Game mode change
- Potion Effects
- Tchat
- Sounds
- Crafting
- Scaffolding
- Knockback
- Fall damage
- Interaction with blocks
- Interaction with entities
- Interaction with items
Configuration
Default configuration
{
"enabled": true,
"version": 1,
"crystal": {
"enabled": true
},
"minecart": {
"enabled": true
}
}
Explanation
enabled
Enable or disable the modversion
Version of the configuration. Do not touch!crystalenabled
Enable or disable the crystal prediction
minecartenabled
Enable or disable the minecart prediction
Disclaimer
Versions for 1.21.x are deprecated. I strongly recommend not using them.
Allowed on servers such as:
PvPClubFadedMCTurtledCatPvP
Versions 4.0+ are designed not to trigger anticheats.
The way it works is by only adding the entities client-side at the moment of their rendering and at the moment of their ticking, without letting them interacting with anything real.
FAQ
How it works ?
This mod uses mixins to inject code into Minecraft code. During certain actions, if implemented, the behavior of a vanilla server is replicated on the client side.
Is this mod a cheat?
You might think this mod is a cheat because it gives an advantage to those who don't have it, and these kinds of mods often raise these kinds of questions.
Here are a few points :
Some people naturally have lower ping, yet it is not considered cheating
It is possible to have 0ms ping behavior in vanilla, but it is also possible to have it (as far as it is implemented) with any ping and Eslium.
Some mods remain accepted by the community but their behavior is impossible to reproduce in vanilla.
I'm thinking in particular of Health Indicator, Armor HUD, AppleSkin, FreeCam, and Ok Zoomer.This mod has been accepted by Modrinth and some PvP servers.
Sodium optimize FPS, Lithium optimize MSPT, Eslium optimize the ping's impact.
Other ping's optimizer are allowed, such as Marlow's Crystal Optimizer, Hero's Elytra Optimizer, Consumable Optimizer or Anchor Optimizer
""" Is this likely to break the desynchronization of the client-server tick loop?
No. This desynchronization is replicated by an artificial time delay of half a tick.
Will versions 4.0+ be backported for minecraft 1.20-1.21.11?
Yes, it is planned.
Compatibility
Eslium should work on any client.
Support me!
Join my Hardcore Minecraft server: HardcoreSMP - 38.143.19.130
Project description from Modrinth.
Pick your setup
Eslium by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
26.1.2
4 loader builds26.1.1
4 loader builds26.1
4 loader builds1.21.11
1 loader build1.21.10
2 loader builds1.21.9
2 loader builds1.21.8
2 loader builds1.21.7
2 loader builds1.21.6
2 loader builds1.21.5
2 loader builds1.21.4
2 loader buildsShowing the newest 12 of 16 game versions. Older files are in the list below.
Check the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Eslium versions and loaders
2.7.1
ClienThings 2.7.1 (1.21.9-1.21.10).jar
13 Oct 2025
2.7.0
ClienThings 2.7.0 (1.21.9-1.21.10).jar
12 Oct 2025
Looking for an older file? The official Modrinth project page is in Resources.