Hot-Join is a splitscreen mod that works by launching new instances and automatically resizing windows.
Requirements
- Fabric API
- Concentration
- One of the following:
Recommendations
Usage
Remember to auto-hide the Dock (on macOS) and the Task Bar!
AuthMe
To log into a Microsoft account: /hotjoin authme microsoft
Legacy4J
Traditional method: /hotjoin legacy4j
OR
For a more reliable experience, use the SDL controller handler.
Click the Pause button on a connected controller that is not the current active controller. This will setup the controller automatically when the second instance launches.
Wait a few seconds (around 30 if you're not playing with loads of mods), and the second instance should open.
Limitations
As of 0.3.0, only 2 player splitscreen is supported.
As of 0.4.0, 4 player splitscreen is supported!
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.21.1
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Ships as hotjoin-0.4.0.jar — drop this file into the mods folder
- Download size: 105 KB
- Download link checked 20 Sept 2026 — working
These come from our own check of the pack file, not from the source page.