Water Sort

Pour coloured liquid between test tubes until every tube holds a single matching shade. Play the shared daily puzzle or climb endless multi-colour levels.

Sort mixed liquid into single-colour tubes with daily puzzles and endless stages. Play Water Sort instantly in your browser — no download or account.

How to play

• A pour is only legal into an empty tube or onto a matching top colour.
• Each test tube holds up to four liquid units before it becomes full.
• Tubes filled with four matching units are locked and completely finished.
• Clear all tubes into pure single colours to solve the current puzzle.

Controls

Click tubes to pour, or press 1–9, 0 and Q/W/E/T to select tubes. Press U to undo, R to restart and H for a solver hint.

Tap a tube to lift its liquid, then tap an empty tube or matching colour to pour. Use Undo to step back or Hint when stuck.

About Water Sort

Water Sort on ito.gg is a clean, distraction-free colour sorting challenge. Every day delivers a synchronized daily level generated from that date's UTC seed, so the move count you share compares directly with friends who play the same date.

Every level is created by walking backwards from the solved state, ensuring that every puzzle is guaranteed solvable without guesswork. If you find yourself in a dead end, unlimited undo and an integrated solver hint help you recover.

Beyond the daily challenge, endless mode adds an extra colour with each level you complete. High-contrast liquid palettes and accompanying geometric symbols ensure every tube is immediately distinguishable on any screen.

FAQ

Is Water Sort on ito.gg free?

Yes. The entire puzzle game runs in your web browser with no download, subscription or sign-up needed.

What makes a pour legal in Water Sort?

You can pour liquid only into an empty tube or onto a tube whose top liquid matches the pouring colour, provided the target tube has enough space.

Are all Water Sort levels solvable?

Yes. The level generator begins at the solved configuration and scrambles backwards using valid reverse moves, guaranteeing that every board has a clean solution.

How does endless mode progress?

Endless mode increases in difficulty by introducing additional colours as you advance, while always providing two empty buffer tubes to help you organize.

Can I play if I have colour vision deficiency?

Yes. In addition to high-contrast colours, every liquid segment displays a distinct geometric symbol so you can identify matches without relying solely on colour.

Enable JavaScript to play. Choose Play to start your solo game.

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