
Browser game · Puzzles
There are three books and each of it has numbers on it.
4.3Runs in your browser · no download

There are three books and each of it has numbers on it. Look for the number which is not seen to the other, there's one for every book. Find those number before the time runs out.
Every stage hands you a small, self-contained problem with a clean answer somewhere inside it. Matching three, sliding blocks, connecting pipes, rotating tiles; the mechanics change but the feeling is constant. You test an idea, watch it fail, adjust. Later stages layer two or three rules together so the obvious move is usually the wrong one. It is quiet, methodical play.
Short, finishable chunks. A stage of Books With Numbers takes a couple of minutes, which makes it a good match for a wait at the bus stop or the last five minutes of a lunch break. It loads in a tab without an install, so there is nothing to clean up afterwards.
Suits adults who want a calm break and children old enough to read simple instructions. Casual players will find the early stages gentle, and anyone who enjoys sudoku or crosswords should feel at home.