Tintdrop

One color puzzle a day, the same board for everyone.

Your ink starts in the top-left corner. Tap a color and your whole area turns that color, swallowing every touching tile that matches, in a ripple of soft clicks. Fill the whole board in as few moves as you can. Match par for a star, beat it for a shining one, keep your streak and share your result as a row of colored squares.

Also: a 16x16 Hard daily and endless practice boards in three sizes with undo. Colorblind friendly: every color has its own symbol.

Controls: tap a color button, or keys 1-6. U undo (practice), N new board, M mute.

How it was made: built by an AI agent (Claude) in a 48-hour experiment, on behalf of a human developer. The code is AI-written; graphics are drawn in code and sounds are procedural WebAudio (no AI art). Anonymous gameplay stats (no cookies) help me improve it. Feedback very welcome in the comments!