NumberKnights

Math practice kids ask to play

Number Knights turns practice into a monster-blasting adventure. Every question fits what your child is ready for, from counting to calculus.

3 free Math Arena games. No card needed. Plays in any browser.

A Number Knights hero fighting slime monsters in the Math Arena A level-up question in the game: 9 + 9 = ?

How it works

1Starts at their gradePick your child’s grade. Their first questions quietly find what they already know: no test, nothing too easy or too hard.
2Play to practiceClear a wave of monsters, then answer a question to earn a new power. Bosses bring bigger challenges.
3Master and move upA topic is mastered after 10 right in a row. Once a whole grade is mastered, the next one opens on its own.

Three worlds to explore

🏟️
Math Arena 131 math topics from kindergarten to grade 12: addition, fractions, algebra, geometry, all the way to calculus. 3 games free
⚖️
Court of Civics More than 900 questions on the Constitution, how government works, voting, and American symbols. Free early access
🗡️
Knowledge Knights An adventure with knights, quests, dungeons and gear. Every chest, gate and level-up asks a question. Free early access

You see the progress

  • Topics mastered, practicing and not yet, for each child
  • Charts of knowledge and practice over time
  • Choose which topics to include, or re-check one
  • Everything for grown-ups sits behind your own PIN
The grown-ups report: topics mastered, problems answered and charts over time

Made for families

🤝
Play togetherBrothers, sisters and friends you approve can join the same game from their own devices.
🔒
Private by designNo ads and no tracking. Kids use a first name only, and you can download or delete your family’s data any time.
💻
Nothing to installPlays in the browser on computers, tablets and phones. Progress follows your family to any device.
👨‍👩‍👧‍👦
One family accountEvery child gets their own player, level and progress. Kids never need an email address.

For teachers

Bring Number Knights to your classroom. Your first class is free.

🏫
Class codes, no student emailsAdd students by first name. They join with a class code and tap their name, on any device.
📊
Progress by standardSee each student's progress on Florida B.E.S.T. or Common Core standards, who needs help, and who played this week.
🎯
Assign what to practiceWith Teacher Plus ($69 a year): more classes, assignments and spreadsheet exports.
Start a free class

Students: join your class here.

Simple pricing

$9.99 once
Unlimited Math Arena for your whole family
  • Start with 3 free Math Arena games
  • Pay once: no subscription, no renewals
  • Covers every child in your family
  • Court of Civics and Knowledge Knights are free while in early access

Questions parents ask

What ages is Number Knights for?

Math Arena covers kindergarten through grade 12, so it suits children from about age 5 up. Each child starts at their school grade, their first questions quietly find their level, and the questions grow with them.

Is there a subscription?

No. Your family gets 3 free Math Arena games. After that, unlimited Math Arena is a single one-time purchase for the whole family. Court of Civics and Knowledge Knights are free while they are in early access.

How does the game choose questions?

Each child starts at their school grade, and their first questions quietly find their level: there’s no test. Practice then mixes every topic of that grade until each is mastered (10 right in a row), and then the next grade opens.

Can more than one child play?

Yes. One family account holds a player for each child, each with their own level and progress. Children can also play together in the same game from separate devices.

What do you do with our information?

We keep your email, each player’s first name, and their game progress, so the game can save progress and show you reports. There are no ads and no tracking, and we never sell information. You can download or delete everything at any time.

What do we need to play?

A web browser on a computer, tablet or phone. There is nothing to install, and kids don’t need an email address: a grown-up signs in once and children just pick their name.

Ready to try it?