An open source rewrite of Minecraft Java Edition written in Swift for macOS.
This client is not at all useable yet. If you're looking for a client to use to play Minecraft today, then this is not for you. But hopefully one day it does get to a useable state.
I am NOT responsible for anti-cheat bans, the client has not been thoroughly tested yet and is still deep in development.
This software is not affiliated with Mojang AB, the original developer of Minecraft.
The main focus of this project is to create a highly efficient Java Edition compatible client written in Swift for macOS. Using Swift means that in the future the client may be able to run on iOS, iPadOS and maybe tvOS. This would allow playing on Java Edition servers, on platforms normally limited to Bedrock Edition.
If you want to have a say in the development of the client or have any questions, feel free to join the community on Discord.
To build Delta Client you'll first need to install Xcode and swift-bundler. Once you've installed both of those, run the following commands in terminal;
# Clone Delta Client git clone https://github.com/stackotter/delta-client cd delta-client # Perform a release build, output the .app to the current directory, and show a fancy progress bar in a pop-up window swift bundler build -c release -o . -p # If you want to work on it in Xcode swift bundler generate-xcode-support # And then open Package.swift with Xcode and you'll be able to build it from Xcode too
At the moment the client only supports joining 1.16.1 servers. However, another developer is working on creating a way for us to easily add support for more Minecraft versions.
Not every version will be perfectly supported but we will try and have the most polished support for the following versions;
First, please check out the contributing guidelines. Then you can checkout the issues for a place to get started. Make sure to leave a comment on the issue you choose, so that people know that someone's already working on it. All changes should be made on the dev branch or a branch created from dev.
We now have an official test server made by @ninjadev64! The address is
play.stackotter.dev. To run it cheaply, the server goes to sleep. To join it click play and you'll get a message telling you that it's starting up. Wait around 10 seconds and then click play again and you should be good to go. Alternatively, you can run your own server on your computer (see below).
To start a test server, download a 1.16.1 server jar from here. Then in Terminal type
java -jar and then drag the download .jar file onto the terminal window and then hit enter. Wait for the server to start up. Now add a new server with the address
127.0.0.1 in Delta Client and you should be able to connect to it. Keep in mind the server may use a significant amount of resources and slow down Delta Client.
To run Delta Client from terminal you can run
/path/to/DeltaClient.app/Contents/MacOS/DeltaClient in terminal. This allows you to see the logs as the app is running.
As Delta Client is still in development it is expected that you will probably run into some errors. Here are the basic troubleshooting steps you should take if you run into any errors;
First, create an issue on GitHub for the error.
If the error is in app startup, you can try running
rm ~/Library/Application Support/dev.stackotter.delta-client/.haslaunched in Terminal to perform a fresh install. Next time the app starts it will perform a fresh install. Your configuration gets wiped but it is backed up in a zip archive in the same folder as .haslauncher
|Last commit: 19 hours ago|
Chunk mesh preparation is now 8.8x faster than in the previous snapshot. This translates to all chunks in a 10 render distance loading in in roughly 20 seconds instead of over 2 and a half minutes.