87.4K reviews
Content rating
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About this game

Euclidea is a FUN & CHALLENGING Way to Create Euclidian Constructions!

127 Levels: from very easy to really hard
10 Innovative Tools
"Explore" Mode and Hints
Easily Drag, Zoom & Pan

New levels are unlocked as you solve the previous ones. You can complete the whole game only if you earn all the stars. But you can buy an IAP that removes this restriction.

“Euclidea has been shown to help with imagination, intuition, and logic, all wonderful skills to develop.” – appPicker

“Euclidea is an absolute joy to play…it’s a game that every math student should have and, in an ideal world, every adult should like.” – Non-Trivial Games

***About Euclidea***
Euclidea is a brilliantly original way to learn about, explore and have fun with Euclidian Constructions! Your task is to solve interesting challenges by building geometric constructions with a straightedge and compass. If you design the most elegantly simple solutions in the least number of moves, you’ll earn the highest scores. Solutions are scored in lines (L) and elementary Euclidean constructions (E).

***Start Simple and Get Smarter!***
Don’t worry if you aren’t a math wizard. Euclidea starts out with simple challenges that guide you through the basics. Once you master the fundamentals, you’ll move on to tougher, more mind-bending challenges such as inner/outer tangents, regular polygons, and more. There are 120 unique challenges in total, which are organized in packs for simpler navigation.

***Add Constructions to Your Interface***
When you learn certain significant constructions – such as angle bisectors, non-collapsing compass, and so on – they are automatically added to the Euclidea interface’s shortcut, which helps you save time and allows you to create clean, uncluttered drawings.

***Easily Drag, Pan & Zoom***
Euclidea-created constructions are completely dynamic. As such, you can drag to adjust angles, lines, radii and so on. You can also easily zoom and pan. This not only makes the experience more interactive, but it allows you to more deeply grasp the relationships between geometric elements, explore various possibilities, and analyze errors.

***Instant, Automatic Precision***
Don’t worry about spending time or effort trying to achieve perfect precision, because Euclidea automatically handles that task by pinning points, lines and circles to the app’s clean interface.

***Additional Special Features***
> A helpful “Explore” mode that allows you to see the figure you need to construct
> An inventory of tools that you create as you progress – you’ll need these to solve future challenges
> Some challenges can be solved in more than one way, which means you can try a different approach and have even more fun

***Questions? Comments?
Send in your inquiries and stay up-to-date on the latest Euclidea news at
Updated on
Oct 7, 2020

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87.4K reviews
Josh Nagy
June 17, 2022
This is a great game concept but the monetization implementation was a poor choice. The game is worth paying for out of the gate but presenting at a free game and then holding almost 90% of the game behind either getting all secret and variant solutions in the first 2 levels or paying money is a classic bait and switch. Regardless of the merits of the game, I can't forgive dark patterns.
52 people found this review helpful
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Dylan Bailey
April 3, 2022
I like it a lot! No hand holding. $1 to get all hints, which give some help but not enough to give away the solution(or wait an hour), definitely reccommend. $1 to move on to the next pack if you don't completely solve the previous one. Though I did have a glitch that the 3rd pack wouldn't open after I'd solved everything. Had to buy it instead. Highly recommend spending the time to solve all completely instead of paying though. Very satisfying when you finally solve them!
65 people found this review helpful
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Randy Frizzell
April 19, 2022
I enjoy the thinking process of solving the first level tasks. An understanding of compass and straightedge construction from high school geometry would certainly be helpful. The additional challenges to complete with minimal steps was very rewarding, but used a lot of trial and error to get to the solution. It took about 30 app hours over six days earn all stars from the first two levels.
14 people found this review helpful
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What's new


• Fixed bugs.

If you enjoy Euclidea, please leave a nice review on the store.
Happy solving!