VS Unofficial Neoforge Port

VS Unofficial Neoforge Port

An unofficial NeoForge port of the Valkyrien Skies 2 physics engine to Minecraft 1.21.1.

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Screenshots

1.21.1 neoforge
Physycs ship

About this Mod

Valkyrien Skies (Unofficial NeoForge Port)

⚠️ IMPORTANT DISCLAIMER
This is an UNOFFICIAL port of Valkyrien Skies to Minecraft 1.21.1 using the NeoForge loader.

  • 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 1.21.1 version, 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 NeoForge 1.21.1. It allows you to create airships, boats, and other physics-based moving structures in the latest versions of Minecraft.

🔧 Port Origin & Compatibility Notes

  • Development: This version was built using an existing port branch from GitHub and has been further tweaked, fixed, and improved by me to work properly.
  • Oculus / Iris Shaders: COMPLETELY incompatible. Do not attempt to use shaders with this build.
  • ETF & EMF: Currently incompatible for unknown reasons. This might be fixed in future updates.

🛠️ Required Dependencies

To play this mod, you MUST install the following dependencies in your mods folder:

  1. Kotlin For Forge https://modrinth.com/mod/kotlin-for-forge
  2. Create https://modrinth.com/mod/create/versions
  3. Architectury API https://modrinth.com/mod/architectury-api

If the developer has any questions or complaints, please write to me on Discord - @valeriy1199

📜 Credits & License

  • Original Creators: Huge thanks to Tri0de, 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

2.3.0-beta.8+35e8864bfe-unofficialbeta
MC 1.21.1neoforge
May 27, 2026

How to Install VS Unofficial Neoforge Port on Your Server

1

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

2

Set neoforge Loader

In the panel under "Egg", select the neoforge loader and matching Minecraft version (1.21.1).

3

Install Mod

Open the mod browser in the dashboard and search for "VS Unofficial Neoforge Port". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

neoforge

Minecraft Versions

1.21.1

Server-side

Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

VS Unofficial Neoforge Port server crashes on startup – what to do?

Most common cause: wrong neoforge 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 (1.21.1). You can switch loaders with one click in the panel.

Is VS Unofficial Neoforge Port compatible with neoforge?

VS Unofficial Neoforge Port officially supports neoforge for Minecraft 1.21.1. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with VS Unofficial Neoforge Port – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if VS Unofficial Neoforge 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.

Rent Modded Server

Install VS Unofficial Neoforge Port with just one click on your server.

Recommended RAM
4 GBab €8/mo
Min. 3 GB | +1 GB pro 8 Spieler
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NVMe SSD Storage
DDoS Protection included

Details

License
GNU Lesser General Public License v3.0 only
Server-side
Required

Supported Versions

1.21.1