Ask HN: Are there any multiplayer terminal console ascii games?

I have been playing this one (with some breaks) for two decades:

Check out BBS's. They have a plethora of multi-user games. Most BBS's have migrated to the Internet age and are accessible via telnet.

It's called a MUD.

To add, Multi-User Dungeons are games you can connect to via Telnet.

try 0verkill, or the classic bsd game, 'hunt'.