- You are talking about MUSH'ing.
A MUSH (sometimes said to be an abbreviation for Multi-User Shared Hack, Habitat, Holodeck, or Hallucination, though these are backronyms) is a text-based online social medium to which multiple users are connected at the same time. MUSH are often used for online social intercourse and role-playing games, although the first forms of MUSH do not appear to be coded specifically to implement gaming activity. Today's two major MUSH variants are descended from TinyMUD, which was fundamentally a social game.
It was really big in the early 2000's, and scratched the itch for many people. I'm not suggesting you start a MUSH, I just want to make sure you realize it is/was a thing. You'll be fine.
- Already solved by whodo.