ASCII Games are fun ! The poor graphics enable your brain to use visualisation to play the game.
It is like reading a book where you must visualise the face of characters, the house, the car, the land.
I had my most immersive game session playing Angband not Cyperpunk 2077 !
Also you can use theses games in a terminal if you work with Linux. So maybe you can play some of theses games at work ?