CurseForge · Minecraft mod
Chrysalis
Flying past the boundaries of what you can do with a Minecraft library mod!
Quick answer
Which Chrysalis release should I use?
Chrysalis 0.5.7 targets 1.21.4 with NeoForge. Installation on the client is optional. Installation on the dedicated server is optional. No extra mods listed for this file.
Where it goes
Is Chrysalis 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 Chrysalis 0.5.7 need?
0.5.7. 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 Chrysalis without breaking your instance.
Built for Chrysalis 0.5.7. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use 0.5.7. It targets 1.21.4 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
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 0.5.7. It opens that exact file at the source.
About this project
What does Chrysalis add?

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Chrysalis is a library mod for NeoForge 1.21.4 with built-in features to assist with mod development and to make modding a bit more accessible for developers!
For more information about Chrysalis, please check out the Wiki!
Do note that the wiki is slightly outdated, so information presented on there might not be fully accurate to the current version!

Currently, Chrysalis has quite a few helpful features and utilities:
Un-hardcoded various mechanics into an easy-to-use data-driven tag system! This includes various things such as piglin bartering items, nether portal base blocks, iron golem repairing materials, chorus plant base blocks, and more!
A good amount of utility methods and classes to assist with the creation of various features!
A dynamic structure-specific music system, mob bucketing system, camera shake system, custom weighted splash text system, and more!
Various admin-only items to help make play-testing a bit more convenient for developers, and a few new additional commands alongside that!

Q: What Minecraft version is this for?
A: This library is made for Minecraft 1.21.4, and I will not be porting it to any older versions!
Q: Is there a Fabric version?
A: No, this mod is and will remain exclusive to the NeoForge mod loader and I won't be supporting other mod loaders.
This project utilizes the Chrysalis License, which can be viewed by clicking on the highlighted text!
Project description from CurseForge.
Pick your setup
Chrysalis by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.21.1
1 loader buildCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Chrysalis versions and loaders
0.5.7
chrysalis-0.5.7.jar
24 May 2025
0.5.6
chrysalis-0.5.6.jar
12 May 2025
0.5.5
chrysalis-0.5.5.jar
25 Apr 2025
0.5.4
chrysalis-0.5.4.jar
17 Apr 2025
Chrysalis v0.5.3
chrysalis-0.5.3.jar
10 Apr 2025
Chrysalis v0.5.0 (Deprecated)
chrysalis-0.5.0.jar
13 Oct 2024
Looking for an older file? The official CurseForge project page is in Resources.