There are several add-on books/software, including: "Little People Farm," "I Know My Numbers," "I Know My Letters," "Cutie Bear's Colors," and "My Fuzzy Puppy," for $15. Before interacting with an additional book, parents need to place the accompanying software cartridge in the unit. The books introduce early learning concepts such as simple vocabulary, colors, letters, numbers, and more.
What makes this interactive book reader so good is that it can always tell what page the book is open to. Toddlers can flip a page to touch something new on the next page, and the unit knows exactly how to respond. This is a distinct advantage over competitor Leapfrog's LittleTouch LeapPad, where the unit needs to be cued each time the page is turned.