The game switched to a peer-to-peer networking model. Before this change, matches were hosted on US servers and ping kinda sucked outside the US.
We went from WebSockets to WebRTC: the room creator hosts and everyone else connects directly to them. This benefits all players: you'll get smoother games with players near you.
And yeah, since I'm not paying for servers anymore, MouseWars will stay free forever :D
The only disadvantage is that room discovery is no longer available, so you have to share a link or room code with your friends, but I believe we can use our Discord for matchmaking.
Have fun! 🐭🔫