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Krypton Reforged Mod pre Minecraft 1.20.1

Unofficial Forge Port of the server networking performance mod "Krypton"

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Aktualizované 03.11.2026

O mode Krypton Reforged

THIS IS AN UNOFFICIAL FORGE PORT.

Please direct bug reports, questions, and everything else to the Github page linked to this Curseforge page, not the Fabric mod. The original maintainer, Tuxed, will not be providing any support for this port.

Krypton optimizes the Minecraft networking stack, meaning it mostly improves server performance with lots of clients, but is also required on the client. It derives from work done in the Velocity and Tuinity projects. Krypton contains several optimizations, including:

  • Highly optimized Netty handlers derived from the Velocity proxy.
  • Flush consolidation to lower server CPU usage (and reducing the impact from hardware security vulnerabilities which exploit speculative execution) and lower server tick times.
  • Micro-optimizations to reduce memory usage and improve packet serialization speeds.

As for this port, it should be compatible with almost everything, as it's just a few mixins. Anything that modifies the networking stack may cause issues, but these patches are low level optimizations and unlikely to cause problems. There were issues however using jar-in-jar on 1.16, so the Velocity natives are packaged using Shade. This also seems to have packaged a few other duplicate Netty classes even with jar minimization and exclusion. It seems to work fine regardless, but if it breaks loading these classes somehow, or if anyone knows how to fix this, let me know.

Our Discord

Ako nainštalovať Krypton Reforged

With Millida Launcher

  1. Install Millida Launcher

    The launcher is free: download it at millida.net/launcher and sign in with any nickname.

  2. Click “Install” on this page

    The launcher opens and installs the mod for Minecraft 1.20–1.20.1 on Forge automatically.

  3. Launch the game

    A profile with it appears in the launcher: click “Play”.

Manually

  1. Install Forge

    The loader must match the game version of the mod file, for example Minecraft 1.20.1. After installing it, a separate profile appears in your launcher.

  2. Download the file for your version

    In the version list above, pick the file KryptonReforged-0.2.3.jar (202 KB) for your game version.

  3. Put it in the mods folder

    The folder is inside .minecraft (Windows: %appdata%\.minecraft\mods). If it does not exist, create it.

  4. Launch the loader profile

    Open “Mods” in the main menu: Krypton Reforged should be in the list.

Minecraft 1.20.1 runs on Java 17: with a different Java version the game may close right after launch.

Verzie

So závislosťami

MinecraftLoaderSúborDátumAkcie
1.20.1ForgeKryptonReforged-0.2.3.jar202 KB 21

FAQ

Which Minecraft versions does Krypton Reforged work on?

There are files for 1.20.1, 1.20. The newest is 1.20.1.

Is Krypton Reforged for Forge or Fabric?

Only for Forge: 1.20–1.20.1. There are no files for Fabric or NeoForge: a mod for another loader will not start.

Does Krypton Reforged need other mods?

The author lists no required dependencies: the Forge loader is enough.

Which Java does Krypton Reforged need?

Minecraft 1.20.1 runs on Java 17. If the game closes right after launch, the usual cause is the wrong Java version in the profile settings.

Where can I download Krypton Reforged safely?

On this page: the file KryptonReforged-0.2.3.jar (202 KB) is stored on Millida’s server, with no link shorteners. SHA-1 checksum: 92690482dad46a8c9cf28e4b6b26e49f4dc67095.

Recenzie

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