This was an exceptionally difficult game from the very first scene. You were particularly hard pressed to even make it off earth if you hadn’t read the book.
After that, it didn’t necessarily coincide with the book, so you had to put yourself into a Douglas Adams mindset for the duration, and that was no easy task.
I think I may have gotten through roughly a third of it before moving on to other games.
Zork was the other game I never did particularly well with. I think I got a little further in it than hitchhikers though.