Math Ninja

Numbers are flying. Only some of them are right. Slice fast — and slice smart.

Math Ninja turns mental math into a fast, addictive slicing arcade. Each round gives you a rule — SLICE: ODD NUMBERS, GREATER THAN 10, PRIME, DIVISIBLE BY 3 — and numbers come arcing up the screen. Cut the ones that match, dodge the ones that don't, and keep your combo alive. The rule keeps changing. The pace keeps climbing. Your brain has to keep up with your blade.

It's the thrill of a slice-’em-up with the workout of mental math — perfect for kids sharpening their arithmetic and adults who want a quick, satisfying brain burst.

HOW TO PLAY • Read the rule at the top of the screen. • Swipe through the numbers that match it. • Miss a valid number — or slice a wrong one — and you lose a heart. • Three hearts. How far can you climb?

FEATURES • 20 slicing rules — even, odd, primes, multiples, squares, digit sums, ranges, and tricky combos that unlock as you climb. • 30 levels of rising speed and chaos — more numbers, faster blades, no two runs the same. • Equation balls — solve 7+5, 6×4, 20−8 on the fly and slice the result for bonus points. • Power-ups — slow-mo to catch your breath, ×2 to stack your score, and shields to save a life. • Combos & big scores — chain correct slices for multipliers and screen-shaking streaks. • 11 achievements, XP, and ninja titles to earn as you master the blade. • Juicy feel — neon trails, satisfying slices, particles, and sound that make every cut land.

PLAY ANYWHERE • 100% offline — no internet, no account, no waiting. Great for planes, commutes, and waiting rooms. • Pick up and play in seconds; runs come in quick, replayable bursts.

LEARN WHILE YOU PLAY A genuinely fun way to drill mental arithmetic — odds and evens, times tables, primes, divisibility, and quick calculation under pressure. Sharp for students, addictive for everyone.

PLAYS IN YOUR LANGUAGE Fully translated into English, العربية (Arabic, with right-to-left support), Français, Español, and Deutsch.

No clutter. No grind. Just numbers, a blade, and your reflexes. Download Math Ninja and find out how sharp your mind really is.