Free browser game
Dive into the Number Ocean
Mathtopus turns KS3 maths practice into an addictive descent through an endless ocean. Solve questions to power up your octopus, open chests, and collect creatures. No download, no sign-up — and your progress saves automatically.
Works on laptops, Chromebooks and iPads. Best in landscape.
Dive seven ocean zones
Descend from the Sunlit Shallows to the Hadal Trench, with new maths and new creatures at every depth.
Maths powers everything
Every question you solve earns pearls and metres. Questions are untimed — understanding always beats speed.
Collect 112 creatures
Open chests to discover hand-drawn sea creatures across rarity tiers, and build squad bonuses.
Ready to dive in?
It’s free and runs right in your browser. Your octopus is waiting.
Launch Mathtopus