● FREE● NO ACCOUNT● AGES 5 TO 12
A maths island you build on: every rock, tree and egg asks a sum.
Numberground is a 3D island where the maths is the game. Mine a rock and it asks you seven eights. Cut a tree, hatch an egg, knock the Tower down, then build your own plot with what you earned. It notices which sums a child finds hard and asks them more, kindly. Made at home for one child, then shared.
Scroll, or play straight away ↓
58 seconds
What it is, in under a minute.
Hand-drawn collage, one canvas, a paper island. The voice is synthetic; the maths is real.
How it works.
01 Open
Type a name, tap a hero
Ten seconds. No account, no email. Pick the year at school and you are on the island.
02 Do
Everything asks a sum
Mine a rock, cut a tree, hatch an egg, cross a bridge: each one is a question. Right answers earn gems and planks.
03 Keep going
The Tower, the regions, the plot
Ten questions in a row knock the Tower down. Pattern Path and Sorting Shore ask in other shapes. The plot is yours to build on.
04 It notices
The hard ones come back
It watches which sums are quick, slow or wrong, asks the hard ones more, then again next week. A parent view shows the weakest five.
What it does not do.
Ages
Reception to Year 6
Counting and adding first, then the tables to 12 times 12, then division, missing numbers and the thousands. Fractions and decimals are not in yet.
Devices
Phone, tablet, laptop
Runs in the browser, nothing to install. A tablet or laptop is best for the first go; the phone works.
Data
A tag, not an account
Progress lives under a seven-character player tag, like a game console. No name leaves the device. A parent can leave an email for updates below; it is never used for anything else.
Curriculum
The PYP continuum
Levels follow the IB Primary Years Programme phases, not one country's syllabus, so it fits an international school and a home in any country.
Updates, only when there is one.
A parent's email, nothing about the child. Used to say when a new region opens, and to help recover a lost player tag. Nothing else, ever.
Made at home for one child.
It started as a five-minute trainer for my son and grew into an island. The code is open; the art and the voices were made with AI tools and are credited in the repository.