I didn't know I'd have so much fun sorting books. I was even more surprised when I realised the books I'm sorting are REAL ones. Some nice classical music to go along with it. The physics of the books feel nice. A good "weight" to them all. Not sure how the scoring works (what decides if I get a 93 or an 84?) but I had fun nonetheless. I did struggle to figure out the "series" ones though as the book covers weren't always legible enough for me to see a clue.