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Betacraft Launcher preserves legacy Minecraft versions, making them playable and functional in modern times.

Betacraft Launcher v1

Made in Java, supports versions up to 1.5.2.

Java Runtime Environment is required.

Windows: 1 Download
Arch Linux: 2 Instructions
Linux: 3 Download
macOS: 4 Download
Source code
  1. Windows x86-32 or x86-64, at least Windows XP.
  2. Arch Linux x86-64.
  3. Any OS with Linux kernel x86-32 or x86-64.
  4. macOS x86-32 or x86-64, at least Mac OS X 10.7.

Instructions for Arch Linux

Install betacraft-launcher-bin* from AUR for stable release, or betacraft-launcher-git* to build the latest commit.

Betacraft Launcher v2 (alpha)

Made in C++, supports versions up to 1.12.2.

In alpha stage, bugs and rapid changes are to be expected.

Windows: 1 x86-64 aarch64
Linux: 2 x86-64 aarch64
macOS: 3 x86-64 aarch64
Source code
  1. Windows x86-64, at least Windows 10 build 1809.
  2. No functional Linux builds at the moment.
  3. macOS x86-64 or aarch64, at least macOS 13.0.

LegacyFix

The core component that makes Betacraft Launcher so good.

Installable for Prism Launcher and MultiMC instances.

Prism Launcher: Instructions
MultiMC: Instructions
LegacyFix jar: Download
Source code

Other utilities are available here.