A true "MMORPG". Back in the day when the genre was new, people were fascinated by the potential of virtual worlds and virtual societies. Social scientists did online studies on player behavior and the interactions people had online, on spontaneous self-governance coming into existence, on how communities formed and developed, and many other similar topics. That potential was never fulfilled. Today - some twenty year…
But yes, sandbox MMO's were a different beast than the themepark MMO's we have today, I had high hopes for Everquest Next when it was announced (like ten years ago now) but it ended up vaporware I guess, and that was the last I've heard of anyone actually trying. I guess metaverse might count but I've mostly ignored anything that facebook tries to do.