We just released an OpenSource Multiplayer server and client, for Multiplayer experiences and we called it EdgeMultiplay.
The server is a NodeJS server that uses UDP and WebSockets and it works with an easy to build Unity C# Client.
Check the server code
and the server documentation
The Unity C# client code
EdgeMultiplay is a simple solution for creating multiplayer experiences on Edge. This repository contains the unity…
The Unity C# Documentation