There's a whole world of MMOs you probably don't know about, and the best way to play them just got basically its own Steam Workshop

pcgamer.com:

Unless you're one of the fewer-than-50 people who still play it regularly, there are solid odds you've never heard of Lusternia, Age of Ascension, a 21-year-old MMO that's been quietly, contentedly trundling along for most of this century. That's a shame, I reckon, because as someone who is decidedly 'not an MMO guy,' I've always loved it and the many, many games like it—games like Achaea, or Aardwolf, or Discworld, or Multi-users in Middle-earth. The simple scope of what you can do in a lot of them is staggering. Become a fighter, a performer, an explorer, or get stuck into the messy and labyrinthine player-controlled politics: guilds against guilds against cities against gods against philosophies against religions.

Anyway, the reason you probably haven't heard of them is because they look like this.

These are text games, baby. These are Multi-User Dungeons (MUDs): a more elegant MMO for a more civilised age, and what they lack in graphical fidelity they make up for in scope and ambition. That screenshot is my Lusternia character running in Mudlet, a client you can use to access the aforementioned games alongside, well, probably any of the 100 MUDs listed here and more besides. Anyway, I've just spent three(ish) paragraphs telling you what MUDs are because Mudlet just got a big update that makes them easier to get into than ever: a new mod organiser, updater, and downloader.

Because MUDs are, really, just big gobs of text fired over an internet connection, the stuff canny coders and scripters can turn them into with a bit of elbow grease is really impressive. For instance, using a few premade packages, my Lusternia guy automatically selects the best attacks for enemies, can find his way pretty much anywhere in the game world at the click of a mouse, and, oh, there's actually a UI now. Imagine!

I can't make any of that myself due to having no actually useful abilities whatsoever, but there are all sorts of forums and Discords where coders share their packages for