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Thunder project artwork

Modrinth · Minecraft modpack

Thunder

[26.3 available] Boost FPS, reduce lag, speed up load times, and save resources with this modpack! Perfect for low-end computers. No extra mods, just pure performance improvement.

Choose a version Pick your version below, then grab the matching file.

Quick answer

Which Thunder release matches 25w04a?

Updated yesterday
alpha file Thunder 0.0.1 for Fabric 1.21.5
Game version 25w04a
Loader Fabric 0.16.10

Thunder 0.0.1 for Fabric 1.21.5 is a complete pack release for 25w04a with Fabric 0.16.10. Install it as its own launcher instance. If the creator publishes a separate server file, make sure it names this exact pack release. 16 mods in this pack file.

Pack setup

How should I set up Thunder for players and a server?

Use Thunder 0.0.1 for Fabric 1.21.5 as the pack version. Install the pack as its own launcher instance. The creator’s listing does not name a separate server file, so check the release notes before setting up a dedicated server. Do not upload the ordinary client folder blindly.

Client instance Install Thunder 0.0.1 for Fabric 1.21.5
Dedicated server setup Match Thunder 0.0.1 for Fabric 1.21.5
Pack loader Fabric 0.16.10

A pack is a matched client and server setup, not one mod with an install-side label. Keep its release, loader, manifest and overrides together.

Plan the server requirements Read the Minecraft installation guide
Referenced mods 16
Client only 9
Server only 0
Not labelled 7

These numbers come from the pack file you chose. “Not labelled” means we don’t know which side it belongs on—not that it is safe everywhere. The file count is not a RAM estimate.

What are the server requirements for Thunder?

Thunder 0.0.1 for Fabric 1.21.5 on 25w04a. The pack contents and setup notes below stay tied to that release.

16 mods in this pack file

The selected pack release is Thunder 0.0.1 for Fabric 1.21.5. That file is for Minecraft 25w04a with Fabric 0.16.10. It contains 16 mod projects. The creator’s listing does not name a separate server file. Check their notes before using one, and do not upload an ordinary client folder or rebuild the pack mod by mod. A file count cannot tell us the right RAM, CPU or storage; size the server for the players and world you actually run.

About this project

What kind of pack is Thunder?


        

🚀Huge Performance Boost

A comparison between Thunder and Vanilla showing a 450% FPS improvement

Setup: Ryzen 9 7945HX, RTX 4080 Mobile, 16 GB RAM
Tested on fancy graphics, 24 render and 5 simulation distances

⬆️Always Up-to-Date

Thunder is kept current with the latest mods, supporting the newest Minecraft versions while also maintaining compatibility with older versions.

🪶Lightweight and Stable

Thunder includes only proven, stable performance mods and essential dependencies, ensuring a seamless vanilla gameplay experience without sacrificing stability.

📥 Installation

Use the official Modrinth app or any launcher that supports Modrinth modpacks (e.g., MultiMC, Prism). For detailed instructions, check the Modrinth documentation.

❓ FAQ

Is there a version available for Minecraft 1.X?

Thunder supports the most popular and recent Minecraft versions, including snapshots when available.

supported versions, see https://thebossmagnus.github.io/thunder/supported-versions.html

For deprectaed realeases and further deatils see this webpage.

Which mods are included?

Check the download page for each version for a detailed list of included mods.

What should I do if I find a bug or want to suggest a mod?

Report bugs or suggest changes by opening an issue on the GitHub repo. Thank you for your support!

Can I use Thunder as a base for my modpack?

Absolutely! Just follow these two conditions:

  1. Include a note in the description linking back to this page.
  2. Do not just reupload the pack, its assets, or it's branding. Also, avoid creating derivative works with minimal additions (e.g. adding just a couple of mods).

In case of doubt feel free to contact me on Discord

🙏 Support the Project

Project description from Modrinth.

Mods in Thunder 0.0.1 for Fabric 1.21.5

Open any mod on Modpacks.ch to check its files and dependencies.

BadOptimizations-2.2.1-1.21.2-21.4.jar SHA-1 8bafe2a3ce1a3c6c48bb243dde3cbd9c5b510a01 · Modrinth version EPTfY6pQ · Project link unavailable Client only
c2me-fabric-mc25w04a-0.3.2+alpha.0.34.jar SHA-1 c3faf4bab99c0592a7152a3cfdff18af2265f15c · Modrinth version clPrTIyu · Project link unavailable Side not labelled
cloth-config-17.0.144-fabric.jar SHA-1 63a1a3b25c642f5a745dfcc9bdc0841660f560af · Modrinth version TJ6o2sr4 · Project link unavailable Side not labelled
dynamic-fps-3.7.7+minecraft-1.21.2-fabric.jar SHA-1 b2f59151a4f2b591563d7bb25ef644849e01fd9b · Modrinth version lCPnAoak · Project link unavailable Client only
entityculling-fabric-1.7.2-mc1.21.4.jar SHA-1 a8b87f259682580d558f793ed99be44d55f06c0f · Modrinth version NkBXk0Ye · Project link unavailable Client only
fabric-api-0.115.1+1.21.5.jar SHA-1 079a205dffe2afea251b2e7c545f6f8bc3ef4298 · Modrinth version EsNijCEQ · Project link unavailable Side not labelled
ferritecore-7.1.1-fabric.jar SHA-1 ee08ca5fd2a7a02dbade048745533b5570a826f0 · Modrinth version IPM0JlHd · Project link unavailable Side not labelled
ImmediatelyFast-Fabric-1.3.3+1.21.4.jar SHA-1 4905e6392a4831d55a3da1c8e6b65177bae1d137 · Modrinth version gh2TGVZk · Project link unavailable Client only
iris-fabric-1.8.5+mc1.21.4.jar.disabled SHA-1 cd2d91bc43678cc7037752e8ea1c9d5fa5ec451f · Modrinth version LZrmMq4i · Project link unavailable Client only
lithium-fabric-0.14.3+mc1.21.4.jar SHA-1 054d976fc8bc6699980ad7e87a344cd356e2c0d5 · Modrinth version t1FlWYl9 · Project link unavailable Side not labelled
modernfix-fabric-5.20.1+mc1.21.4.jar SHA-1 712e07e2b4a26dfa6ae1357900fecef75558452f · Modrinth version gx7PIV8n · Project link unavailable Side not labelled
modmenu-13.0.0.jar SHA-1 46344e4ffcb2e7c933a5b42016642d298d244a7f · Modrinth version dG06oDvH · Project link unavailable Client only
moreculling-fabric-1.21.4-1.2.3.jar.disabled SHA-1 e2556b23a0198e9df5f4d3aae4d002cd457985c0 · Modrinth version Lh9uFvJ9 · Project link unavailable Client only
sodium-fabric-0.6.6+mc1.21.4.jar.disabled SHA-1 772956d8cc9ebec66a5001dccf66d8d1af3c3465 · Modrinth version tu8qILqH · Project link unavailable Client only
threadtweak-fabric-0.1.5+mc1.21.3.jar SHA-1 fab25cc8e836f06eac27b1dea7c12e0ac38e3cda · Modrinth version HV6EY0h3 · Project link unavailable Side not labelled
yosbr-0.1.2.jar SHA-1 f0340e9c0bc95d67f3f3e9c1cd79b61054af11f9 · Modrinth version KMOzdYko · Project link unavailable Client only

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Thunder by Minecraft version and loader

Choose the version and loader you play, then open the matching release.

81 available setups

Showing the newest 12 of 66 game versions. Older files are in the list below.

Made local changes? Try them in a copied instance before touching a world you care about.

Recent files

Thunder versions and loaders

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Looking for an older file? The official Modrinth project page is in Resources.

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