This Godot 4 addon simplifies the deployment and hosting of multiplayer games. It includes scripts for bootstrapping multiplayer games and an editor plugin that facilitates deployment into the Jam Launch cloud.
Most feaures require a Jam Launch account. You can sign up for an account here.
There is an example project that uses this addon here.
With a regular Jam Launch account, you can play a deployed version of the example project here.
The current hosting servers are in eastern North America, and western Europe, so you may encounter high latency in other regions. More hosting regions will be coming online in early 2024.
With a Jam Launch developer account, you can deploy and test projects with one click from the addon's editor plugin:
If you don't have an account, you can still run games in local hosting mode with the addon. This allows you to verify game functionality and compatibility with Jam Launch.