I used to play nethack a lot. But I have not played a single game yet this century. I might download it and start playing again. Nethack is very impressive for a text based games.

Also, I used to play various Dikimuds and that is where I started using the name "Perderabo" (I always played a mage). Dikimuds were intended to be played with a telnet client. Part of the fun for me was writing custom clients that automated a lot of the game play. But muds are too antiquated now... I won't be playing those again.