CurseForge · Minecraft mod
The Impossible LIbrary
A library mod that makes the impossible possible in Minecraft
Quick answer
Which The Impossible LIbrary release should I use?
The Impossible Library targets 1.16.5, 1.19.4, 1.20.1 with Fabric, Forge, 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 The Impossible LIbrary 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 The Impossible Library need?
The Impossible Library. 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 The Impossible LIbrary without breaking your instance.
Built for The Impossible Library. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use The Impossible Library. It targets 1.16.5, 1.19.4, 1.20.1 with Fabric, Forge, 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 The Impossible Library. It opens that exact file at the source.
About this project
What does The Impossible LIbrary add?
Changelog & Known Issues for 0.4.0
This mod was originally made to offer mod devs methods for doing things that are typically thought of as impossible, hacky, tedious, or maybe even require a third party java library. It now additionally serves as an API that can be used to load and run mods on multiple versions & mod loaders.
Supported Versions
The status indicators are as follows:
BROKEN → The API has been implemented in this version, but it is not yet able to load.
FUNCTIONAL → There are no known major issues specific to this version.
LOADABLE → The game can load in this version, but entering a world is not yet possible.
PLANNED → The API has not yet been implemented for this version, but it will be soon.
PLAYABLE → Worlds are able to load in this version, but there may be stability issues
Cleanroom
1.12.2 → PLANNED
Fabric/Quilt
1.16.5 → FUNCTIONAL
1.18.2 → FUNCTIONAL
1.19.2 → FUNCTIONAL
1.19.4 → FUNCTIONAL
1.20.1 → FUNCTIONAL
1.20.4 → FUNCTIONAL
1.20.6 → FUNCTIONAL
1.21.1 → FUNCTIONAL
1.21.4 → PLANNED
Forge
1.12.2 → FUNCTIONAL
1.16.5 → FUNCTIONAL
1.18.2 → FUNCTIONAL
1.19.2 → FUNCTIONAL
1.19.4 → FUNCTIONAL
1.20.1 → FUNCTIONAL
1.20.4 → BROKEN
1.20.6 → BROKEN
1.21.1 → FUNCTIONAL
1.21.4 → PLANNED
NeoForge
1.20.1 → FUNCTIONAL
1.20.4 → PLAYABLE
1.20.6 → FUNCTIONAL
1.21.1 → FUNCTIONAL
1.21.4 → PLANNED
Getting Started
Features
I will be writing a more in-depth wiki at some point, but in the meantime here are a few helpful things you can do:
- Easier file creation and manipulation
- Generic image rendering to the screen
- Global nbt data storage and retrieval
- Support for radial gui elements and some helper methods regarding that
- Custom async tick events able set by millisecond
Issues & the Discord Server for my mods
You are free to use this mod in a modpack, server, video, or anything that links back to this page or the Modrinth page with proper credit. Posting it to rehosting sites like 9minecraft is not cool.
Project description from CurseForge.
Pick your setup
The Impossible LIbrary by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.20.6
4 loader builds1.20.4
4 loader builds1.20.1
4 loader builds1.19.4
4 loader builds1.19.2
4 loader builds1.18.2
4 loader builds1.16.5
4 loader builds1.12.2
4 loader builds1.12
4 loader buildsCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
The Impossible LIbrary versions and loaders
The Impossible Library
theimpossiblelibrary-0.4.7.jar
22 Nov 2025
theimpossiblelibrary-0.4.6.jar
19 Nov 2025
theimpossiblelibrary-0.4.5.jar
13 Jul 2025
theimpossiblelibrary-0.4.4.jar
16 Apr 2025
theimpossiblelibrary-0.4.3.jar
14 Apr 2025
theimpossiblelibrary-0.4.2.jar
9 Apr 2025
theimpossiblelibrary-0.4.1.jar
1 Apr 2025
theimpossiblelibrary-0.4.0.jar
31 Mar 2025
theimpossiblelibrary-1.20.1-fabric-0.3.1.jar
7 Sept 2023
theimpossiblelibrary-1.19.2-fabric-0.3.1.jar
7 Sept 2023
theimpossiblelibrary-1.18.2-fabric-0.3.1.jar
7 Sept 2023
theimpossiblelibrary-1.19.2-0.3.1.jar
7 Sept 2023
Looking for an older file? The official CurseForge project page is in Resources.