Our story
I built Orb Spirits for my 8-year-old daughter. She loved creature games and didn't love math worksheets, so I made the math the thing you do to play. Every level has been playtested at our kitchen table, and she still asks for one more.
Math your kid actually wants to play.
Orb Spirits is a creature-collecting adventure where every move is real math. Build numbers, break shields, make friends. Grades 3 to 5.
No sign-up. No ads. Plays in any computer or tablet browser.
How it works
The math is the game.
Not a quiz in front of a game. Every move your child makes is a math move.
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Build the number.
Drag glowing orbs, crystals and gems into the tray. Ten orbs fuse into a crystal; hold a crystal to break it back into ten. Place value, right in their hands.
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Break the shield.
Every grumpy monster holds a shield: a number, a picture, a clock or a story problem. Match it exactly and it shatters. Too much bounces back.
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Make a friend.
Beaten monsters become friends with new powers: copying groups, doubling beams, splitting moons. 80+ spirits to collect, evolve and visit in the Spirit Grove.
What they learn
A whole school year in every Book.
Each Book follows the US Common Core State Standards for one grade, one adventure at a time.
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Ready
Book 1 · Grade 3
The Light of Glowwood
- Place value to 1,000
- Adding and subtracting with regrouping
- Multiplication and division
- Fractions on a number line
- Time to the minute
- Area and perimeter
- Graphs, rounding and two-step problems
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Early access
Book 2 · Grade 4
The Lost Colors
- Numbers to a million
- Multi-digit adding and subtracting
- Multi-digit multiplication and the area model
- Division with remainders
- Factors and primes
- Fractions and decimals
- Angles
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Coming next
Book 3 · Grade 5
- Decimals
- Adding, multiplying and dividing fractions
- Volume
- The coordinate plane
- Expressions
Every fight is generated to have at least two ways to solve it, and each skill has its own difficulty that adapts as they play.
For parents
Made for kids. Built for parents' peace of mind.
Parent Corner
See what they practiced, where they get stuck and what to try at home, in English, Español or 中文.
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No ads. Ever.
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No coins, loot boxes or upsells aimed at kids.
Purchases sit behind a grown-ups check.
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No personal data from children.
Progress stays on your device.
Pricing
Fair, simple pricing.
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Free to start
Free
Always free to start: the first two lands of Book 1. During early access, everything plays free in your browser.
Play free -
Launch price
Book 1 · Grade 3
Regular price: $14.99$9.99 one-time -
Book 2 · Grade 4
Early access · 3 of 9 lands
$14.99 one-time
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Complete Collection
$29.99 one-time
Every Book, including future ones.
No subscriptions. No coins. One purchase covers the whole family. Apps for iPad, iPhone and Android are coming soon; the browser version is free to play today.
During early access, everything in the browser version is free.
Hear when the full game is out.
Leave your email and we'll write once, when Orb Spirits launches. Nothing else, ever.
Thank you! We'll write once, at launch.
For grown-ups. See our privacy page.
FAQ
Questions parents ask
What ages is it for?
Kids 7 to 11, grades 3 to 5. Younger kids who are strong at math enjoy Book 1 too.
Does my child need to read well?
No. Every line is spoken aloud, and the tutorial shows each step with a pointing hand.
What devices does it run on?
Today, any modern browser on a computer or tablet. Apps for iPad, iPhone and Android are coming.
What data do you collect?
Nothing personal from children. The browser version sends anonymous counts (like "level won") with no cookies and no identifiers, so we can see where it gets hard. Progress is saved on your device.
Can teachers use it in class?
Yes, the free browser version works in any classroom browser. Classroom features are on our list; write to us.
How is it different from other math apps?
Most put a quiz in front of a game. In Orb Spirits the math is the game: you win by building the right number, not by answering a question to earn a turn.