Books drop down a chute one at a time, and you have to file each one into its correct call-number spot on the shelf before the cart piles up.
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How to play
A book falls down the chute showing its call number. Click the gap on the shelf where it belongs in numerical order. Mis-file it or let it land and it joins the backlog cart; fill the cart and the run ends.
Read the falling book's call number and find its correct gap
Click the right gap to shelve it in proper order
Wrong placements and dropped books pile into the return cart
Click the cart to retry the oldest backlogged book
Game modes
Daily: a fixed sequence of books shared each day
Practice: a fresh randomized run
Controls
Desktop: click a gap on the shelf to file the book; click the cart to retry a backlogged one
Phone & tablet: tap a gap to shelve and tap the cart to retry (mouse or touch only)
Tips & strategy
Scan the shelf's existing spines first so you can place the next book before it falls too far
Clear the cart during quiet moments, letting it near capacity leaves no room for error
What you'll learn
Shelf Order turns library call-number filing into a fast-paced sorting game.
Skills: library skills, call numbers, alphanumeric ordering, information literacy
Best for: roughly grades 4–10 (ages 9–16)
For parents & teachers: library call numbers and ordering.
About Shelf Order
Shelf Order is an original free browser game that turns library call-number filing into a fast-paced sorting challenge, training the ordering logic behind a real classification system.
A free, original browser game on PlayPendium. No download, no install.