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Valkyrien Skies [UNOFFICIAL] Port
An unofficial NeoForge/Fabric port of the Valkyrien Skies 2 physics engine to the newer Minecraft versions!
Screenshots




About this Mod
Valkyrien Skies (Unofficial Port)
⚠️ IMPORTANT DISCLAIMER
This is an UNOFFICIAL port of Valkyrien Skies for newer Minecraft versions and mod loaders.
- Do NOT report any bugs or issues found in this version to the official Valkyrien Skies developers.
- For support, bug reports, or questions regarding this port, please leave a comment here or contact the port author directly.
🌟 About the Port
This build brings the powerful physics engine of Valkyrien Skies 2 to newer versions of Minecraft.
It allows you to create airships, boats, and other physics-based moving structures using the Valkyrien Skies physics system.
The project includes ports for modern mod loaders, with compatibility depending on the specific Minecraft version and loader.
🔧 Port Origin & Compatibility
- Development: This version was built using existing port branches and source code from GitHub and has been further tweaked, fixed, and improved to work properly on newer Minecraft versions.
- Iris Shaders: Compatible with the Fabric build for Minecraft 1.21.11.
- Oculus: Compatibility may vary depending on the Minecraft version and loader.
- ETF & EMF: Currently incompatible for unknown reasons. This may be fixed in future updates.
⚠️ Important: Compatibility can differ between Minecraft versions and mod loaders. Always use dependency versions matching your specific setup.
🛠️ Required Dependencies
To play this mod, you MUST install the required dependencies for your specific Minecraft version and mod loader.
- Kotlin - Required by the port
- Architectury API — Required by the port.
Make sure to use dependency versions compatible with your Minecraft version and mod loader.
👤 Original Developers
Huge thanks to the original developers of Valkyrien Skies:
- triode_ — Original Valkyrien Skies developer.
- rubydesic — Original Valkyrien Skies and Eureka! Ships developer.
If the developer has any questions or complaints, please contact me on Discord: @valeriy1199
📜 Credits & License
- Original Creators: Huge thanks to triode_, rubydesic, and the entire Valkyrien Skies team for creating this amazing physics engine.
- Original Source Code: Valkyrien Skies GitHub
- License: This port is distributed under the LGPL-3.0 License, strictly adhering to the original mod's licensing terms.
Available Versions
How to Install Valkyrien Skies [UNOFFICIAL] Port on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set fabric Loader
In the panel under "Egg", select the fabric loader and matching Minecraft version (26.2).
Install Mod
Open the mod browser in the dashboard and search for "Valkyrien Skies [UNOFFICIAL] Port". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
26.2, 1.21.11, 1.21.1
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
Valkyrien Skies [UNOFFICIAL] Port server crashes on startup – what to do?
Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (26.2). You can switch loaders with one click in the panel.
Is Valkyrien Skies [UNOFFICIAL] Port compatible with fabric and neoforge?
Valkyrien Skies [UNOFFICIAL] Port officially supports fabric, neoforge for Minecraft 26.2, 1.21.11, 1.21.1. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with Valkyrien Skies [UNOFFICIAL] Port – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Valkyrien Skies [UNOFFICIAL] Port consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
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