I made an web version of the boardgame "We're Doomed" that runs in the browser and supports multiplayer with a central NodeJS server hosted on Heroku. It uses the wonderful boardgame.io library which provides a good abstraction for state management and client synchronization. The frontend uses React, Typescript, and Tailwind CSS. It was hosted on Heroku until they removed the free tier.
Source code is available at github.com/aherriot/were-doomed