I also loved these books as a kid. A while ago I started making a game - BASIC Instincts - that was going to be about type-in listings and modifying your world with code (https://www.youtube.com/watch?v=GwBiJR_rj_w)

I got the interpreter working and started creating the world... then the game Else Heart.Break() came out and took the wind out of my sails - it did what I was planning to do, only much better. Though it might be time to revisit it now!