CurseForge · Minecraft mod
In-Effect!
Easily permanent vanilla and modded effects to players, util for modpacks.
Quick answer
Which In-Effect! release should I use?
In-Effect! [NEO] v1.0.0 - 1.21.1 targets 1.21.1 with NeoForge. The project page does not say whether this file belongs on the client, dedicated server, or both. No extra mods listed for this file.
Where it goes
Is In-Effect! required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
The source does not explicitly classify this release as client-only or server-only.
What else does In-Effect! [NEO] v1.0.0 - 1.21.1 need?
[NEO] v1.0.0 - 1.21.1. Change the file and its required mods may change too.
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 In-Effect! without breaking your instance.
Built for In-Effect! [NEO] v1.0.0 - 1.21.1. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use [NEO] v1.0.0 - 1.21.1. It targets 1.21.1 with NeoForge; 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
The project page does not say whether this file belongs on the client, dedicated server, or both.
- 04
Pick the file you checked
Use the “Get this file” button beside [NEO] v1.0.0 - 1.21.1. It opens that exact file at the source.
About this project
What does In-Effect! add?
ABOUT:
Add infinite and permanent effects to players with easy config that updates in real time. Also, you can use effects from mods! The effects can't be removed using milk, commands or dying.
HOW TO CONFIGURE:
Open "in_effect-common.toml" file in config folder and add any effect you want.

- permanent_effects: list of effects, in this example, Speed III.
- show_icon: Enable or disable the effect toast in the screen corner.
- show_particles: i need to explain this?
- ambient: make particles a bit transparent.
BUGS OR SUGGESTIONS?:
Please report any bug or suggestion in the comments. Thanks for use my mod!
Project description from CurseForge.
Pick your setup
In-Effect! by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.20.1
1 loader buildCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
In-Effect! versions and loaders
[NEO] v1.0.0 - 1.21.1
in_effect-1.0.0-1.21.1.jar
4 Aug 2026
[FORGE] v1.0.0 - 1.20.1
in-effect-1.0.0-1.20.1-forge.jar
29 May 2026
Looking for an older file? The official CurseForge project page is in Resources.