Hi @britzl , it’s me again 
Anw, do you still have the code for this example? I’ve clicked the link but seem like the page has been removed/deleted. But the platformer example is exactly what I try to make. I now (kinda) know how to send message, receive message with client and server, looking for ip address using p2p_discovery. Still, there are so much more to do with multiplayer game like how you can only move your character without moving another? What kind of data to send between players (I don’t think that sending position every frame and their animation is the right way, but instead to send their input? And about the enemy, how to make them in sync and if other players kill it, it should be killed in sync - which means every players see that it got killed?). Is there any standard way of doing it (or like the method that people usually use)?
Thank you for your help!