Oh my goodness. I learnt to code using that book (Adventure Games)! It wasn't the only one, and as you say the big program at the back is somewhat mystical, but

Oh my goodness. I learnt to code using that book (Adventure Games)! It wasn't the only one, and as you say the big program at the back is somewhat mystical, but I remember it being instrumental in demystifying how a game was put together.