Color Sort is a free online liquid-sorting puzzle you can play right in your browser — no sign-up, no download. Pour colored liquid between tubes until every tube holds just one color. Choose Easy, Medium, or Hard, and every puzzle is freshly generated and guaranteed solvable, so you'll never see the same one twice.

1. Tap a tube to pick it up — it lifts, ready to pour.
2. Tap another tube to pour into it.
3. You can only pour onto a matching color or into an empty tube.
4. A tube is done when it's full of a single color.
5. Sort every tube to solve the puzzle — fewer moves means a better score.

💡 Tip: Keep at least one tube empty as working space, and dig out buried colors before topping off nearly-finished tubes.