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Products that do what Compass and Ruler construction problems as puzzle game does

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.

  1. 1IM

    This is the first iteration of a short game I’m making that tries to interactively explain some of my favorite math questions / ideas. My goal is mostly to get the player curious and not necessarily to explain absolutely everything. There were a lot of fun technical parts to building this: - For implementation reasons, it’s much easier if the lines all have integer intersection points with each other. To do this, when a new line is added I “cheat” by rounding intersections to integers and then splitting the old lines at the intersection into new linds (with potentially different slopes)…

    2024 · rahulilango.com

  2. 2SA

    Messing with your TI-84 graphing calculator is a rite of passage for every teenager who has ever been bored in a math class. In 2013 I was that teenager, and it gave me an idea for a tiny game about sledding on graphs. This project grew into my white whale, and I spent my twenties trying and failing to finish it alone. I shelved the game when I started working for Hack Club in 2018—until last May, when a few community members took it off the shelf. The project took on a life of its own, and turned into a year of nights and weekends from a global team of 20+ teens in 8+ countries. Today…

    2023 · github.com

  3. 3BG

    I made this 10 level Game. Excited for people to try it. :) Stay Balanced :)

    2024 · balanc3dgame.com

  4. 4HA

    This is a game I wrote over the last month and a bit. The effort allocation was pretty different from what I've done in the past. The game design snapped together very quickly: I had the initial idea, played a couple of games on a spreadsheet to get a feel for the idea, and made one change based on those plays. After that everything felt just right through multiple rounds of playtesting. Likewise the puzzle generation is nowhere near as elaborate as in my previous game, fairly simple methods worked well and provided good variety. Instead I ended up spending silly amounts of time on curating…

    2024 · huewords.snellman.net

  5. 5
    Cucalu94

    Explore the world through geometrical shapes (iOS game)

    2014

  6. 6IM

    Hi HN! Worked on this side project for a while and wanted to share it. It's free to play.

    Oct 2025 · detective.wiki

  7. 7TC

    I'm experimenting game mechanics that are usually seen on a typical grid, but transposed on an irregular one. This is a first game based on Minesweeper. The changes an irregular grid brings are that cells don't all have 8 neighbors. Some can have less, some can have more. So when you try and deduce if a tile has a mine, you have to pay closer attention at the number clues and which tiles neighbors it. My intention is to make a very classic game a bit more challenging & fun. I've also released a first version of Checkers/Draughts, and plan to test similar variants for Chess, Othello and…

    2024 · polyreplay.com

  8. 8IM

    Hey, maker here. After launching a daily word search game, I randomly thought of this math game while driving. Finally got around to making it and I think it turned out pretty cool. It’s a math search game that’s meant to help you practice your quick addition, subtraction, multiplication, and division skills. I’m hoping it’ll help people (even those like me who aren’t big on math) learn and increase their speeds. (There are also some settings you can enable to make the game harder) If you try it out, please let me know if you found it fun, if you have anything you’d like me to add, or if you…

    2024 · worchle.com

  9. 9
    Kontrast136

    An adventure puzzle game made out of abstract drawings

    2018

  10. 10AD
  11. 11SA
  12. 12IB

    Hi! I build an MCP server that allows clients to play Minesweeper. It turns out that Claude is not very good at it (makes obvious mistakes, hasn't won a single game on a 9x9 board after many attempts). I am curious how I can prompt Claude to do better?

    2025 · github.com

  13. 13IM

    Hey there! I'm the brains behind the math crossword game on my site. This game is all about making math a little more fun – users just drag and drop numbers to fill in the blanks and move on to the next level if they get it right. Let me know if face any issues or have any suggestions! :)

    2024 · scientific.place

  14. 14IM

    I have always loved geography, and due to my childhood interest in football, I learned a lot of country flags. A lot, but not all of them! So, I decided to make a free game for anyone who enjoys flags and wants to improve their knowledge. You can compete against others because each game is timed. Have fun!

    2024 · flagmatch.com

  15. 15TL

    I’ve been building a few small games to help kids (and curious adults) build reasoning and logic skills. Think Word Ladder, Prime Hunter, Math Maze ,all in the browser, no installs. Would love feedback or suggestions for new types of puzzles

    2025 · quizmathgenius.com

  16. 16IW

    I’ve been working on a puzzle game for a few years as a side project. The game is based on a small region of tiles in a grid that is mirrored, modified, and mirrored again. It’s based on a novel phenomenon I noticed where, once these mutations happen a few times, the original region can be hard to recognize. You have a feeling there are symmetries in the image, but they are just out of grasp. Going further, if only part of the region is visible, such as mirroring off the edge of the board, it adds to the feeling and it becomes a satisfying puzzle to solve. I originally published this on the…

    2024 · hidden-mirrors.com

  17. 17WS

    There is a mobile game called DragonBox. It sort of tricks you into learning algebra by starting with very abstract manipulations of a puzzle that must follow rules... gradually the game teaches you more and more rules and also strips out the more abstract elements until on the last levels you are finally solving real equations. I loved it, it taught my kids algebra.... and it was just fun. Over the years I often thought that there should be a calculator for Algebra that works this way... something where you can drag terms around and cancel & distribute with gestures, but most importantly…

    Jul 2026 · github.com

  18. 18

    A simple open source puzzle game.

    2016

  19. 19IM

    A while ago I discovered three.js, a JavaScript library to manipulate 3D objects. It looked really interesting, but I had no real need for it... To change that I recently challenged myself to make one 3D web game per month with three.js. And I just release game #2, a puzzle game called Cuboid, and you can try it here: https://www.thomasfriday.com/cuboid/ Please let me know if you have any questions or feedback. Thanks!

    2023 · thomasfriday.com

  20. 20LA

    Hi HN, I wanted to share a web game I’ve been building in HTML, JavaScript, MySQL, and PHP called LINEX. It is primarily designed and optimized to be played in the mobile browser. The idea is simple: you have an 8x8 board where you must place pieces (Tetris-style and some custom shapes) to clear horizontal and vertical lines. Yes, someone might think this has already been done, but let me explain. You choose where to place the piece and how to rotate it. The core interaction consists of "drawing" the piece tap-by-tap on the grid, which provides a very satisfying tactile sense of control and…

    Feb 2026 · playlinex.com

  21. 21IT
  22. 22

    Study geometry while playing on squared paper

    2016

  23. 23IM
  24. 24EA

    Hi HN, I made this small game in my spare time. It's quite addictive, I spent a lot of hours playing instead of polishing it. My own highscore is 96,792. Source code is at https://github.com/MikeBellika/tile-game. It's made with react, tailwind, and framer motion. Hope you enjoy!

    2024 · bellika.dk

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