Another one of my husband's childhood books I stumbled across. I found about 8-10 books of his when he was younger. Reading them when I need a break of the 900+ page book I am currently reading. This one had a storyline but also included a computer program to run on older computers and gaming consoles of the 70s-early 80s. I teased my computer tech husband if he did the program as he read the book when he was a kid and he grinned and said yes. I gave it a 2 star because as an adult and not being into computers I just wasn't too into it. But it gave me a break from the book I'm reading so I'm good.