I think the simplest answer to that is just to try it, if you haven't already.

Briefly, everyone connected is playing a single game of Zork (in this instance, tho any z-machine game will work). Like a chat session everyone can see every other player's commands/comments, and the game's output.

Just

  $ ssh -p 64100 urnamehere@sayitwith.ink
  password: nitfol
  > /help
  > /who
  > !look
  > !get lamp

Also, thanks and I think I must have missed the "SSH Toy" craze when it was popular.