Hello! This is a little toy in which you sort books by their call codes similarly to how you would if you were shelving books in a library, although the books here are less complicated than a real library collection. Both alphabetical and numeric collections are available. In either case, drag and drop the books into order. Click/tap on "Check Solution" when you think you have everything in order.

There are two modes: free play and timed test. Free play lets you organize for as long as you like. The timed test gives you a set number of shelves to put in order and tracks your fasted completion times for each collection. You can change the length of the test in settings menu. Each possible length tracks fastest times separately.

This toy does not make any sound. There is nothing wrong with your headphones.

By using this toy, you agree that trans rights are human rights and that black lives matter.

Have fun!