Euclidea review
A cross-platform puzzle game for practicing Euclidean constructions, not formal proofs.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Euclidea turns Euclidean geometry into a sequence of straightedge-and-compass construction puzzles. Its 120 levels range from introductory constructions such as bisectors and perpendiculars to more advanced challenges, with 11 tutorials to support learning. The web game and iOS and Android apps make it suited to individual learners who want to explore constructions and practice problem-solving across devices. It is a focused learning game rather than a general geometry course or a classroom management tool.
The construction tools are central to the experience: learners build figures interactively, then drag base points to see how the construction changes. Automatic checking confirms whether the target object is present, while Explore mode and hints offer ways to investigate a challenge. Solutions are scored by move counts, and learned constructions can yield unlockable shortcuts. These features emphasize constructing and refining solutions; they do not provide proof practice. Choose Euclidea when the learning goal is to reason through geometric constructions, rather than to write formal arguments.
Euclidea is freemium, with a free plan. The vendor describes the desktop web version as playable without star restrictions, while mobile users may need in-app purchases to unlock additional packs. An account can sync progress and saved solutions across platforms. Those features make it a practical fit for solo learners who want to return to puzzles on web or mobile, but the lack of classroom tools makes it a weaker fit for teachers seeking group or class management. The product's narrow puzzle focus is a strength for construction practice and a limitation for anyone seeking broader geometry instruction.
Euclidea pros and cons
- Where it wins
- 120 construction levels span introductory and advanced challenges.
- Dynamic figures, Explore mode, hints, and target-object verification support practice.
- Web and mobile access can sync progress and saved solutions through an account.
- Where it doesn't
- No dedicated proof-practice activities.
- No classroom tools for teaching or managing groups.
- Mobile users may need in-app purchases to unlock additional packs.
Euclidea fact sheet, pricing and score →
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