An easy-to-learn puzzle with surprising depth
Open the app and you're playing in ten seconds. Stay for the layered strategy: planning three moves ahead turns a calm pastime into a real brain workout.
Math puzzle · Brain trainer
Number Clash
Match numbers. Clear the board. Train your brain.
A relaxed number puzzle where pairs of identical digits or sums of ten vanish from the grid. No timer, no pressure — just pure logic and a satisfying cascade of matches.
7 + 3 = 10
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Day 14 streak
1.2M+
players matched
A calm puzzle with surprising depth.
Number Clash takes a one-line rule — cross out pairs that match or sum to ten — and turns it into a satisfying logic workout. Plan ahead, spot patterns, and watch the board slowly dissolve into clean, empty rows.
- + Tap to pair — identical numbers (6–6, 3–3) or pairs that add up to 10 (2–8, 3–7).
- ↔ Connect horizontally, vertically, or between the end of one row and the start of the next.
- ⟳ When no pairs remain, append leftover numbers to the end and keep solving.
- ✓ Win the round when the board is empty — every cleared puzzle earns a fresh challenge.
"It looks simple until you're three moves deep with nowhere to go."
Everything you need. Nothing you don't.
Number Clash is built around a single, elegant rule — and a handful of features that make the puzzle feel good to play again and again.
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No timer, no pressure
Take your time. Every puzzle is yours to finish at your own pace — perfect for a coffee break, a commute, or winding down at night.
Hints when you need them
Stuck? Tap the hint button and Number Clash highlights the next pair it can find. No shame in a hand when the board gets tricky.
Daily challenges
A fresh puzzle every day. Build a streak across a month and unlock unique trophies that mark the run.
Train memory and focus
Players report sharper concentration after a week of daily play. The rule is simple, the mental load is real.
Hours of varied gameplay
Random board generation, multiple difficulty levels, and stretchy end-of-board append rules mean two puzzles in a row never feel the same. There's always a smarter way through.
A puzzle that quietly trains four different skills at once.
What 15 minutes of Number Clash actually does to your brain.
M
Memory that holds
Holding numbers in your head while you scan the grid is the heart of the puzzle. Players notice they remember short sequences longer after a few weeks of regular play.
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Arithmetic on autopilot
"Make ten" is the simplest mental math there is — but the game nudges you to do it constantly. Younger players build number sense; adults keep theirs sharp.
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Sustained concentration
A single interrupted puzzle can stall your run. The game rewards attention — and a 10-minute session feels like a real focus drill without trying to be one.
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Genuine relaxation
Soft music, clean visuals, no countdown clock. Number Clash sits in the same category as a crossword with your morning coffee — calm, productive, repeatable.
30-day trophy challenge
A fresh puzzle every morning. Keep the streak alive.
Number Clash serves a brand-new board each day. Solve it, keep the chain going, and earn unique trophies for hitting one-week, two-week, and full-month streaks.
7d
Bronze trophy
14d
Silver trophy
30d
Gold trophy
10+
Find your next pair. Win the board.
Number Clash is free, calm, and ready when you are. Download it, play your first puzzle in under a minute, and decide if it earns a spot on your home screen.
Google Play · Free
4.7 average rating
No ads during play