There is a storyline to these, even though the majority of the books are puzzles. No my favorite to read aloud, but Squirt just loves the puzzles, and looks forward to solving them, wants to do more and more. I have to set a limit on how many pages we will do before bed or he would do them all. A good thing, from every angle. We have enjoyable time together, he is challenged, and we read a little. A win.