Initially I thought I would be able to do it with webRTC but it turns out you still need some kind of specific server to connect clients. Instead I cheated a li

Initially I thought I would be able to do it with webRTC but it turns out you still need some kind of specific server to connect clients. Instead I cheated a little bit and used a messaging service https://ably.com/ https://ably.com/. It was easy to setup and use, and their free plan is generous. Another thing I didn't achieve is to find a RNG I could configure with a seed, so amongst my client I have a special one, the "host" who is drawing the cards, etc. Overall it's been working really well. There is one thing that is particularly difficult without a server, that is debugging. Especially if using a mobile phone, you're in the dark when a bug happens. And with Ably and the free tier, you have to be connect in debug mode beforehand to see the logs, very unpractical. Good luck with your game!