Game Info
Puzzle: Water Sort
Puzzle: Water Sort
The definitive tube-sorting puzzler. Pour coloured water between test tubes until each tube runs one pure shade — hundreds of escalating levels of calm, logical chaos.
Puzzle: Water Sort is the pure form of the water-sorting genre. Tubes hold stacked layers of coloured water in mixed order; you may pour the top layer of one tube into another only if the receiving surface is the same colour or the tube is empty. Separate every shade into its own tube and the stage is cleared.
Why It Is So Replayable
- Rules you learn in five seconds, depth that lasts hundreds of levels.
- A perfect difficulty ramp — early stages teach, later stages test planning several pours ahead.
- Undo plus restart means a wrong pour costs nothing but a tap.
- Genuinely relaxing. No music-pumping urgency, no timer, no opponent.
How To Approach Hard Tubes
- Identify which colour has the most layers — that is your anchor colour, and it needs a destination tube early.
- Keep at least one tube fully empty for as long as possible; it is your only escape hatch.
- Avoid splitting a colour across two partially filled tubes unless you can merge them immediately.
- When stuck, reverse-engineer: ask what the final three pours must look like, then work backwards.
🎮 How to Play
Basic Controls
- Tap a test tube to lift its top water layer.
- Tap a second tube to pour — only works if the target has free space and the same colour on top, or is empty.
- Continue until every tube holds exactly one colour.
- Undo reverses the last pour; Shuffle redistributes layers when you are truly stuck.
- Progress auto-saves between sessions.
Strategy & Advanced Tips
- Preserve at least one empty tube. It acts as a universal buffer; without it you will hit dead ends on levels with 5+ colours.
- Identify the "lonely" colour. A colour that appears in only two tubes must be merged early — if you bury one instance under other layers you will waste many moves digging it out.
- Work top-down on tall stacks. Tubes with 3+ mixed layers are harder to resolve later; start reducing them before your free space shrinks.
- Think two pours ahead. Each pour changes the top colour of both source and target — plan so the revealed colour is useful elsewhere.
- Use the Undo button freely. There is no penalty; trial-and-error is a legitimate strategy on puzzle levels 40+.
Playing on Mobile vs Desktop
On mobile, tubes are arranged vertically and fit comfortably in portrait mode. Desktop players can click tubes with the mouse or use number keys 1-9 to select and pour. Both versions save progress locally in the browser.
Common Mistakes
- Pouring a colour onto a tube that already has a different colour underneath, creating a deeper mess.
- Filling the last empty tube with a "convenient" single layer and losing your only buffer.
- Restarting the level instead of using Undo to step back one move.
Frequently Asked Questions
Is Puzzle: Water Sort free?
Yes, every level is completely free with no downloads or accounts.
Does it work on phones?
Yes — the game is touch-first and runs in any modern mobile browser.
How many levels are there?
Over 100 levels with increasing tube counts and colour variety.
Can I undo moves?
Yes, unlimited Undo is available at any point during a level.
What does Shuffle do?
It randomly redistributes the remaining water layers. Use it when no legal pour exists.
Is there a time limit?
No. The game is purely relaxing — take as long as you need to solve each puzzle.
3 Comments
Harder than the thumbnail suggests. Tube count climbs and my usual shortcut stops working around level 25.
If you get stuck: never pour into a tube that would leave two colours sitting together unless it finishes a layer.
Genuinely relaxing. No timer, no pressure, just pour and think. I leave it running while my coffee brews ☕