Sumino
A make-ten math puzzle — drop number blocks and clear every run that sums to 10
Move and rotate the falling block, then line up digits so a straight run adds up to 10. Use the on-screen buttons, swipe the board, or play with the keyboard (arrows/WASD, Space to drop).
Sumino — make-ten math puzzle game
Play Sumino, a free make-ten math puzzle in your browser. Drop number blocks and clear every horizontal or vertical run that adds up to 10, chain combos for big scores, and play with keyboard, touch, or fullscreen on mobile.
Features
- Make-ten mechanic: any horizontal or vertical run of touching number blocks that sums to exactly 10 clears off the board
- Falling tetromino-style pieces carry a digit in every cell, biased toward values that pair up to 10
- Cascading chain combos — cleared blocks make others fall, and back-to-back clears multiply your score
- Ghost-drop preview, plus Next and Hold slots for planning your placements
- Speed ramps up with each level as you clear more blocks
- Three ways to play: keyboard, large on-screen buttons, or swipe and tap on the board
- Immersive fullscreen mode that turns the page into an app-like experience on phones
- Runs entirely in your browser; your best score is saved locally on your device
How to use
- Press Start to drop the first numbered block.
- Move it left or right and rotate it so the digits land where you want.
- Make a straight line of touching blocks — across a row or down a column — that adds up to exactly 10; it clears instantly.
- When blocks clear, the ones above fall down; if that creates another sum of 10 you score a chain combo with a higher multiplier.
- Clear blocks to raise your level and speed; the game ends when the stack reaches the top, so keep it low and chase your best score.
Tips & Best Practices
- Keep an eye on complements: a 7 wants a 3, an 8 wants a 2, and two 5s clear instantly.
- Use the Hold slot to stash an awkward piece until the board is ready for it.
- Set up stacks so that clearing one run drops blocks into another — chains multiply your score fast.
- Watch the Next preview and plan two moves ahead, especially as the speed increases.
- Hard drop with Space (or a downward swipe) to place a block quickly once you know where it goes.
- Your best score is saved per browser; clearing site data will reset it.
FAQ
How do blocks clear in Sumino?
Any contiguous straight run of number blocks — horizontal or vertical — whose values add up to exactly 10 is removed. A pair like 6 and 4, or a line like 2-3-5, both make 10 and clear.
What is the goal of the game?
Keep clearing runs that sum to 10 to score points and avoid stacking blocks to the top. Set up cascading chains for big combo multipliers and a higher score.
How do I control the falling block?
On desktop use the arrow keys or WASD to move and rotate, Space for a hard drop, Shift or C to hold, and P to pause. On mobile use the on-screen control buttons or swipe and tap directly on the board.
Is there a fullscreen mode for mobile?
Yes. Tap the expand icon to enter an immersive fullscreen mode that hides the rest of the page and enlarges the board and controls, so it feels like a native mobile app.
Is Sumino free and private?
Yes. Sumino is completely free, needs no sign-up, and runs entirely in your browser. Your best score is stored locally on your device and nothing is sent to any server.
Does it work offline?
Once the page has loaded the game runs fully client-side, so it keeps working without an internet connection.