All books are mechanisms for traversing time and space. These two books that I recently grabbed at the thrift store do that in multiple ways.
These Choose Your Own Adventure titles first came out in the lates 1970s and were just the thing for me as a pre-teen reader. I was reading the Narnia books and Madeleine L’Engle’s time warping novels. I also read loads of Ray Bradbury, Asimov, and harder science fiction like Larry Niven’s Ringworld books that mostly went over my head.
I was into computers and fantasy at the same time so there was something about stories that felt like smart adventures.