
Modrinth · Minecraft mod
FastCrystal
Fastest possible crystal optimizer
Quick answer
Which FastCrystal release matches Fabric?
FastCrystal 2.1.5 targets 26.3 with Fabric. Installation on the client is optional. Installation on the dedicated server is optional. All 1 required mods have matching files.
Where it goes
Is FastCrystal 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 FastCrystal 2.1.5 need?
2.1.5 on Fabric. Every mod below is checked against that same setup.
Install Fabric API first. We found matching files for this game-version and loader setup.
We only count dependency files that match this setup. A file for another loader does not fill the gap.
Before you install it
Add FastCrystal without breaking your instance.
Built for FastCrystal 2.1.5 on Fabric. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use 2.1.5. It targets 26.3 with Fabric; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
Install Fabric API first. We found matching files for this game-version and loader setup.
- 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 2.1.5. It opens that exact file at the source.
About this project
What does FastCrystal add?
FastCrystal
FastCrystal is a Fabric mod that optimizes and speeds up End Crystals for Crystal PvP.
Features
< 2.1.0
FastCrystal removes all interact and attack cooldowns, makes the client no longer rely on the server to send the crystal removal packet, and duplicates attack and interact packets for crystals.
This results in:
- Faster crystal placement
- Instant crystal breaking
>= 2.1.0
FastCrystal removes all interact and attack cooldowns for crystals and handles crystals entirely on the client.
This results in:
- Instant crystal placement
- Instant crystal breaking (2.1.3+)
- Instant explosion sounds and particles, making it feel like you have no ping while using crystals
Server Opt-Out
Servers can send an opt-out packet to disable FastCrystal for all players.
Using FastCrystal on Fabric servers also disables it for all players.
For Paper/Spigot server implementations, see the GitHub repository.
Project description from Modrinth.
Pick your setup
FastCrystal by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
26.3
1 loader build26.2
1 loader build26.1.2
1 loader build26.1.1
1 loader build26.1
1 loader build1.21.11
1 loader build1.21.10
1 loader build1.21.9
1 loader build1.21.8
1 loader build1.21.7
1 loader build1.21.6
1 loader build1.21.5
1 loader buildShowing the newest 12 of 17 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
FastCrystal versions and loaders
2.1.5
fastcrystal-2.1.5.jar
18 Sept 2026
2.1.5
fastcrystal-2.1.5.jar
18 Sept 2026
2.1.5
fastcrystal-2.1.5.jar
18 Sept 2026
2.1.3
fastcrystal-2.1.3.jar
17 Aug 2026
2.1.3
fastcrystal-2.1.3.jar
17 Aug 2026
2.1.1
fastcrystal-2.1.1.jar
17 Aug 2026
2.1.1
fastcrystal-2.1.1.jar
17 Aug 2026
2.1.0
fastcrystal-2.1.0.jar
15 Aug 2026
2.1.0
fastcrystal-2.1.0.jar
14 Aug 2026
2.0.3
fastcrystal-2.0.3.jar
22 Jun 2026
2.0.3
fastcrystal-2.0.3.jar
20 Jun 2026
2.0.2
fastcrystal-2.0.2.jar
15 May 2026
Looking for an older file? The official Modrinth project page is in Resources.