Actually it's a good book, I could take my DS but I hate playing my DS on the tube, everyone looks trying to see what I am playing and thus I just pick up a good book and read on the train in to work, which is a good idea because where I live it takes 40 - 70 mins to get to work on average and since I have 2 jobs and work 7 days a week I'd kill my battery and probably not have time to recharge my DS anyhow.