A Numberdale game · Ages 9 to 13 · Grades 4 to 7
Mathmancer
A card battler for kids who want to think. Every monster hides behind shields with numbers on them; a spell that makes exactly that number breaks one. Climb the tower.
No ads. Plays on a computer, a tablet, or upright on a phone.
How it works
Every spell is a sum.
The cards are the math. There is no quiz, only the shield's number and the hand you were dealt.
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Draw a hand.
Five number cards, the four runes + − × ÷, and brackets. Three shields wait: a small one for a quick hit, a big one worth more.
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Build the spell.
Tap cards and runes into the spell tray: 5 × 3 = 15 breaks the 15. Later floors ask for (5 + 6) × 7 = 77, and the game teaches brackets step by step.
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Climb the Starlit Tower.
New cards and charms between battles, shops and campfires, puzzle doors, a boss every few floors. Every monster has a number rule, such as multiples of 3, that goes into the Monster Book.
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Then the Shattered Tower.
A second tower, where a division makes a fraction: 3 ÷ 4 = 3/4. Shields are halves, thirds and quarters down to twelfths, a Flip card turns 3/4 into 4/3, and the doors ask about equal fractions.
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And the Sunken Tower.
A third tower, sunk in a frozen sea, where numbers go below zero: 3 − 8 = −5. Shields are below zero or either side of it, an Opposite card turns 5 into −5, and the doors ask which thermometer is the coldest.
What they learn
Mental math with teeth.
Made for grade 4 to 7 challenge-seekers. A climb takes 30 to 45 minutes and saves after every room. The Daily Tower is the same tower for everyone each day.
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Ready
The four operations
Every floor
- Mental arithmetic with + − × ÷
- The times tables up to 12 × 12
- Planning: which shield first, which cards to keep
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Ready
Order of operations
From the second act
- Brackets, taught step by step
- Order of operations (Common Core 5.OA.1)
- Two-step and three-step spells
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Ready
Number rules
The Monster Book
- Factors, multiples and primes
- Square numbers
- Odd and even, digit sums
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Ready
Fractions
The Shattered Tower
- A fraction is a division: 3 ÷ 4 = 3/4
- Equal fractions, unlike pieces, mixed numbers
- × and ÷ by a fraction (grades 5 and 6)
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Ready
Negative numbers
The Sunken Tower
- Going below zero: 3 − 8 = −5
- Adding and taking away negatives: 3 − (−5) = 8
- × and ÷ with negatives (grades 6 and 7)
For parents
The Math Journal
On the "Who's playing?" screen, the Journal shows each player's skills, the times facts they know and miss, and the chances they missed, with a few next steps. It is a good thing to look at together. The game is meant to be a real challenge: if a climb ends early, the score and the Journal still grow, and the next climb starts fresh.
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No ads. Ever.
Not in the games, not on this page.
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No coins, loot boxes or upsells aimed at kids.
Anything a grown-up should decide sits behind a grown-ups check.
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No personal data from children.
Progress stays on your device. A family account is optional.
FAQ
Questions about Mathmancer
How hard is it?
A real challenge, on purpose. The first battle is a short guided lesson; after that, a climb can end early, and that is part of the game. The Journal shows what to practice.
Does my child need to read?
Some. Card help, the Monster Book and the Journal are text, and the narrator is your browser's own voice.
Does it work on a phone?
Yes, upright or sideways. A tablet or a computer gives the cards more room.
Does it teach fractions?
Yes, in the Shattered Tower: choose it on the hero screen. It practises fractions as division, equal fractions, adding unlike pieces, mixed numbers, and × and ÷ by a fraction, and the Journal follows those skills too.
Does it teach negative numbers?
Yes, in the Sunken Tower: choose it on the hero screen. It practises going below zero, adding and taking away negatives, and × and ÷ with negatives, read aloud the way teachers say them ("three minus negative five"), and the Journal follows those skills too.
Games
The other games
Finished, or not the right fit? The next stretch is waiting.
