Compass and Ruler construction problems as puzzle game
Ecocoru is a puzzle game where you have to solve compass and ruler construction problems. The game mimics compass and ruler and let you draw straight lines/segments and circles/arcs. You can also view and explore a solution for each problem. A basic knowledge of well-known results of Euclidean geometry is needed to play the game. The game has over 70 problems.The game is designed for full-screen mode and the use of the mouse.
Compass and Ruler construction problems as puzzle game launched on September 11, 2022 with 125 votes, #274 of 3,464 launches that month and more than 90% of that year's launches. The site was still online in September 2026, 4 years on.
In plain words
Ecocoru is a puzzle game where players solve classical compass and ruler construction problems using digital tools that mimic traditional Euclidean geometry instruments. The game allows users to draw lines, segments, circles, and arcs to work through over 70 geometric problems, with solutions available to view and explore. It is designed for players with basic knowledge of Euclidean geometry and requires a mouse and full-screen mode to play.
written from the facts on this page · September 2026
From the sources
geometric puzzles
Ecocoru is a puzzle game where you have to solve compass and ruler construction problems. The game mimics compass and ruler and let you draw straight lines/segments and circles/arcs. You can also view and explore a solution for each problem. A basic knowledge of well-known results of Euclidean geometry is needed to play the game. The game has over 70 problems. Some problems date back to classical antiquity [1-2]. The following books have been essential during this game's development. [2] A. Sutton. Ruler & Compass. Practical geometric constructions, 2009 The game is designed for full-screen mode and the use of the mouse. The Steam version contains over 100 problems and includes the "Compass…from sdkgames.itch.io
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