ManyMC

A familiar Minecraft Launcher with native support for macOS arm64 (M1)

⚠️ The ManyMC launcher is no longer being updated.

Prism Launcher is the official continuation of ManyMC. It is actively developed by numerous maintainers, and directly inherits all of ManyMC's ARM patches. Migrating is super easy:

Close all launchers

Run the following commands from a Terminal:

cd ~/Library/Application\ Support
mv ManyMC PrismLauncher
cd PrismLauncher
mv manymc.cfg prismlauncher.cfg
rm -r meta metacache cache libraries

Find Prism here:
https://github.com/PrismLauncher/PrismLauncher
https://discord.gg/prismlauncher

The ManyMC Discord guild is not going away, and it continues to be a place to reach me. Feel free to join:
https://discord.gg/CcFxPaDnjv

Supported versions

All stable versions of Minecraft from 1.6.4 to the latest have been tested and work great. Fabric, Forge, and OptiFine also work across all versions. Even huge modpacks like All the Mods 6 run perfectly!

Community

You are welcome to join the official Discord where you can get faster support and discuss the future of ManyMC. Link is here: https://discord.gg/CcFxPaDnjv

More fixes

Can't sprint and attack at the same time? Or sneak and scroll? These are all old and unfixed Minecraft bugs on macOS. Get rid of them now using our mod McMouser (CurseForge).

Install

There are two ways to install ManyMC, please choose one:

Homebrew (recommended)

Install brew if you haven't already
In a Terminal, run the following commands one by one. This will install the correct versions of Java 8, Java 17, and ManyMC:
```
brew tap homebrew/cask-versions
brew install zulu8 zulu17
brew install --no-quarantine ManyMC
```
Run ManyMC as normal (it's in /Applications/ManyMC)

Depending on which version of Minecraft you want to play, you will need to use a different version of Java. Use the table below to find the correct Java path for your Minecraft version, and select it when ManyMC prompts you:

Minecraft Version	Java Version	Architecture	Path
1.16 and below	1.8.0_X	aarch64	/Library/Java/JavaVirtualMachines/zulu-8.jdk/Contents/Home/bin/java
1.17 and above	17.X.X	aarch64	/Library/Java/JavaVirtualMachines/zulu-17.jdk/Contents/Home/bin/java

ℹ️ NOTE: You can always change the Java version individually by selecting a Minecraft instance and clicking on Edit instance > Settings > Java installation.

To update ManyMC in the future, simply run the following command in a Terminal, your data will not be affected:
```
brew upgrade --no-quarantine ManyMC
```

Manual

If you had trouble with this guide, check the following unofficial video tutorial or reach out on Discord for help.

Troubleshooting

Minecraft/MultiMC released an update, but I can't see it in ManyMC
- Changes are pulled approximately every 2 hours. If after that long the update is still missing, raise an issue.
OptiFine doesn't work
- To fix, install one of the two combinations below:
  - Forge + OptiFine
  - Fabric + OptiFabric + OptiFine
- Use the latest preview version of OptiFine
Minecraft 1.16 and before crash on boot
- Make sure you have installed and selected Java 8 in ManyMC, not a newer version. Read the installation section for more information.
Forge/modpack for Minecraft 1.16 and before crashes on boot
- Either update Forge to the latest version, or downgrade Java to build 320 or before
Minecraft 1.5.2 and before has inverted colors and stuttering
- On Minecraft 1.4.7-1.5.2, enable Fullscreen mode from the game's Options > Video Settings.
- On older versions, press F11 to enable fullscreen.
  - You may have to press Fn+F11 or rebind your Show Desktop keybind in System Preferences > Mission Control > Show Desktop for F11 to be sent to Minecraft

How does it work

Minecraft is mostly written in Java, which means that as long as you have a native arm64 Java installed, you can almost run the game natively. The only exception are some libraries like LWJGL, which have platform-specific binaries. Fortunately, all of them are open-source, so they can be re-built to work.

This launcher is a fork of PolyMC, since the latter does not yet natively support arm64. To comply with PolyMC's licensing, this launcher was rebranded to ManyMC. To use the custom native libraries, a dedicated meta package has been created.

Building

⚠️ This will only work on macOS. Tested on macOS 12.1 arm64.

Install dependencies:

brew tap homebrew/cask-versions
brew install zulu8 qt@5 cmake

Install XCode and make sure the command line tools are set up:
```
xcode-select -p
```
Run a build:
```
./build.sh
```
- You will need your own secrets if you want login with Microsoft account to work. Copy notsecrets to a new directory called secrets and follow the README inside.
- If you get weird Java errors, you may have to manually set your JAVA_HOME to the zulu8 you just installed.

License

MinecraftMachina/ManyMC

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