Arcade

Play

Each game hides a piece of mathematics — beat the game, and the mathematics is yours.

✒️

One Stroke

10 levels: draw the drawable, call out the impossible. The walkthrough is Euler’s 1736 criterion.

❖

Symmetry Puzzle

10 levels: solve the solvable, see through the impossible — the square’s 8 symmetries are the group D₄.

🧊

Rubik's Cube (3D)

Drag to orbit, buttons to turn layers. 43 quintillion states, never more than 20 moves from solved.

🎲

Meinopoly ↗

Turn any book into a board game — a moddable strategy engine, solo with local bots, right in the browser.