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About game
A crossword where numbers take the place of words. Equations cross each other, so a single number has to fit two of them at once. Get it right and both light up green.
🧮 Addition, subtraction, multiplication and division
📈 Loads of levels, from simple sums to big grids
🎯 Difficulty ramps up gradually, with breathers after the tough ones
✅ Every level has exactly one solution
📅 A daily puzzle and a streak to keep alive
🏆 Speed points, a leaderboard and achievements
🌙 Light and dark themes
A five-minute brain warm-up for grown-ups, and handy for kids practicing mental math.
How to play
Numbers wait in the panel at the bottom; the board holds equations with empty cells. Drag a number into an empty cell, or tap the number first and then the cell. Tap a filled cell to send its number back.
A correct equation turns green, a wrong one turns red. You clear the level once every equation on the board is correct.
Stuck? Tap the light bulb to place one correct number.
Solve fast and without hints to score the most. Tip: start with the cells where two equations cross — they have the fewest possible answers.