It's EverQuest. If you liked Classic/Kunark era EverQuest then you might like this game. The gameplay is very simplistic and heavily leans into you needing to manually go out and build a group of people that have the right classes. You go to an area and kill the same mobs over and over for a couple hours and hope you get something neat or a level.
But re: your (other) topic, I think you're looking for a sandbox MMO or semi-sandbox. Sadly, sandbox MMOs are rare these days (even semi-sandbox). The most we have are in the 1st Gen and 3rd Gen MMOs. Or, MUDs/MUSHes. (AoC looks promising though.)