Each day brings three grids, Classic, Pro and Extreme, with a handful of colored pieces scattered around the board. You drag them into place, rotate them and switch each one between normal and double size, and the puzzle only fits once you work out which pieces need to grow. A timer and move counter run as you play, and the start screen links to a replay of yesterday's solution. Play needs no account, though streaks and the leaderboard need one and older grids sit behind a one-time payment. Works on phones and computers.
How the creator made it
The creator designed the rules, interface and hand-built levels for the itch.io edition. They say Claude Cowork wrote more than 95% of the code in short sessions, with the creator testing each change and often sending screenshots of bugs. They consulted Gemini and Grok for second opinions early on and worked with Claude to split the single-file prototype into JavaScript modules. The generator starts from a filled grid and cuts it into pieces so every puzzle has a solution. The creator tuned the rules using solve times, completion rates and player ratings, and limited simple pieces that made gaps too easy to fill.
From their page on itch.io ↗ and a page on GitHub ↗.
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