A 2D MMO off to a really good start. It has enough content right now for a few hours of gameplay, + PVP (which I have not experimented with since I was the only player on at the time). It has some quests, crafting, grinding, and a proper boss that will smash you if you try to fight it by yourself.

https://snakechips.itch.io/project-mmo

I hope this project will go a long way.