Math

Euclidea

Kids build geometric figures with a virtual compass and straightedge, hunting for the solution with the fewest moves.

Euclidea turns classical compass-and-straightedge constructions into a puzzle game. Each level asks for a shape or line, like an equilateral triangle, the midpoint of a segment or a square inside a circle, and hands over a small set of tools for drawing lines and circles. Kids work out a route, and the game appears to accept only constructions that hold for any starting points, not ones that merely look right. Stars go to the most elegant solution in the fewest moves, and hidden bonus stars reward finding more than one answer. Shortcut tools such as the perpendicular and angle bisector unlock as they are earned, so each pack leans on the last. The opening packs feel approachable, and the later ones look as if they could keep a geometry fan happily stuck for weeks.

Ages

Middle schoolers and up who enjoy geometry

Works on

Web browser; iPhone and iPad app; Android app

Topics

Math

Languages

English, Spanish, French, German, Italian, Portuguese, Dutch, Polish, Czech, Slovak, Greek, Russian, Ukrainian, Japanese, Korean, Chinese, Vietnamese

Listed

2026-10-18

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