>>718334072
Honestly don't know how good it'll end up being when it's out, but right now Duel Corp is close to entering early access and I'm pretty interested in it.
https://store.steampowered.com/app/1804470/Duel_Corp/
Singleplayer game first with a psuedo MMO feel (PSO/Vindictus style hub area where you can see other people, two-player team up, and run out from there to do quests or randomized dungeons and trials out in the world together). There's also emergency world events like towns being raided and things like that.
The dev(s?) has progress updates weekly so I have some hope this isn't another Atlyss type of situation where it's released and updates immediately dry up for a year.