Yes, I use the flashback system. I was getting about 2 hours a day when I could stay awake. I am still trying to get at least and hour. Sub Hunt, Backgammon, AD&D. I submitted a request to have Sea Battle made into a 1 person game. That is my favorite game of all. Back in the 80s I had friend who was my equal at the game. That's when the game was the very best there was to play.
Sorry for the long answer,
Hankster