Euclidea

Euclidea is a geometry puzzle game built around classical Euclidean constructions. It features 156 levels ranging from easy to very hard, 10 innovative tools, an Explore mode with hints, and intuitive drag, zoom, and pan. The app supports competitive play via Game Center, and there are no advertisements. Levels unlock as you solve challenges, and players earn stars (L, E, and V) for elegant solutions; an optional in-app purchase can remove restrictions.

Challenges are solved by constructing with a straightedge and compass. The most concise solutions earn the highest scores, measured in lines (L) and elementary Euclidean constructions (E). Euclidea guides you from beginner-friendly tasks to tougher challenges like tangents and regular polygons. There are 120 unique challenges organized into packs, with new constructions automatically added to the interface as you progress. The dynamic geometry lets you drag points, adjust angles, and maintain instant precision. A helpful Explore mode and multiple solution paths add replayability and deep understanding of geometric relationships.