
Browser game · Puzzles
In this game, a winter image is hidden beneath subtraction expression tiles.
4.3Runs in your browser · no download

In this game, a winter image is hidden beneath subtraction expression tiles. Players must drag and drop the correct number bauble onto the matching tiles to solve the expressions. As each expression is solved, the bird image gradually gets revealed. The goal is to uncover the entire image by completing all the math problems correctly.
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 Chill Math Subtraction 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.