I wrote a symmetry game with a daily puzzle
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…
I wrote a symmetry game with a daily puzzle launched on May 15, 2024 with 126 votes, #438 of 4,539 launches that month and more than 95% of that year's launches. The site was still online in September 2026, 2 years on.
In plain words
Hidden Mirrors is a puzzle game where players identify symmetries in a grid of tiles that have been repeatedly mirrored and modified. The game presents a small region transformed through multiple mutations, making the original pattern difficult to recognize at first glance. Players solve puzzles by detecting hidden symmetries, with added complexity when only partial regions are visible due to board edges. The game offers a daily puzzle and is designed for players who enjoy pattern recognition and spatial reasoning challenges.
written from the facts on this page · September 2026
From the sources
A free daily puzzle game for people with taste, style, and above average spatial relations
In the maker’s words, at launch
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…
Does a similar job
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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)…
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Source: Show HN post ↗ · launch text quoted in part
