Between the strokes of night

I first read this book in the early nineties, when I was just old enough to participate in the world games in the book and it left quite an impression. It was one of the first more serious SF books I read, before that it was mainly the Shadowrun and Battletech novelizations. Most of the other SF books I read at that time left quite an impression, as did this one. On a re-read 30 years later it still mostly holds up. I would classify this as YA lit and I think it could get a movie trilogy like Divergent or Maze Runner, as the general setup is quite similar. Nonetheless I still enjoyed the book.