Sortl is a free daily liquid sorting puzzle. Every day at midnight a new puzzle is published — the same one for every player around the world. Test tubes are filled with layers of coloured liquid. Your job is to sort them so each tube contains only one colour.

Click a source tube to select the top layer, then click a destination tube to pour it. You can only pour onto the same colour or into an empty tube. Solve the puzzle in as few moves as possible.

Step 1 — Read the boardEach tube shows its layers top to bottom. You can only move the top layer of any tube, so plan around what's exposed now, not what's buried.

Step 2 — Select and pourClick (or tap) a tube to pick up its top layer, then click a second tube to pour it. Click the same tube again to cancel the selection.

Step 3 — Follow the two rulesA layer can only move onto a matching colour, or into a fully empty tube. You can't pour onto a different colour, and you can't overfill a tube past its capacity.

Step 4 — Pour in runsIf the top of a tube has several same-coloured layers stacked together, they all move at once onto a matching destination — one efficient move instead of several wasteful ones.

Step 5 — Sort every tubeYou win the moment each tube holds a single colour or is empty. Do it in as few moves as possible to beat par and earn a Flawless Sort.

Sortl scores you against par — the minimum number of moves needed to solve the day's puzzle. The puzzle is always solvable cleanly, but there are usually messier routes that technically work too, so the real challenge isn't just finishing — it's finishing without wasted pours.

Matching or beating par earns the top tier. Every move over par nudges your label down. Undo is there if you back yourself into a corner, but a tidy first solve is what earns a Flawless Sort.

→ Start by identifying which tubes are closest to being sorted — one or two moves away.

→ Empty tubes are valuable — use them as temporary storage, not just final destinations.

→ If you get stuck, use Undo rather than Restart to save moves.

→ In harder levels, you often need to "unpack" a tube before you can sort it properly.

→ In Overflow, small tubes make weak temporary storage — save your big empty tubes for holding runs, and treat small ones as a last resort.

→ In Blind Stack, once you pour from a tube its next layer stays revealed for good — use that to build a mental map instead of trying to remember the whole board at once.

→ Your streak resets if you miss a day — come back every day to keep it alive.

There's no "play again" for the daily puzzle. One puzzle, one attempt, same for everyone. Want more? Switch to Levels mode for 240 puzzles across four modes — Classic, Split, Overflow, and Blind Stack — at your own pace.

The daily puzzle is Classic sorting — same rules, one shot, every day. Levels mode goes further: 240 puzzles across four completely different mechanics, 60 levels each.

🧪 Classic (levels 1–60) — the daily format, on your own schedule. Sorted easy to hard, from simple four-tube warm-ups to tricky seven-tube tangles.

◧ Split (levels 61–120) — some layers are split ◧ between two colours instead of one. They only settle into a tube once both halves have a matching home. A few tubes start locked and only open once you pour in the colour they're waiting for.

🌊 Overflow (levels 121–180) — tubes come in different sizes: 2, 3, or 4 layers. A layer that fits in a full-size tube might not fit in a small one, so you have to plan pours around capacity, not just colour. Early levels lean on big tubes to ease you in; later ones lean on small ones, where every pour is tight.

🌫 Blind Stack (levels 181–240) — you only see the top layer of every tube. Whatever's underneath stays hidden until you pour from that tube and expose it — permanently. You're sorting with a partial map, building it up pour by pour instead of seeing the whole board from the start.

No account. No subscription. No ads mid-solve. Sortl is completely free to play and always will be — it runs entirely in your browser, and your streak and stats are saved locally on your device.

It's part of Stoop, a small collection of free daily browser games built by one person who thinks the internet is better with little puzzles in it. Open it, sort your tubes, and come back tomorrow.

Liquid sort is one of the most satisfying logic puzzles because the rules click into place in seconds but mastery takes much longer. Every pour is permanent for the duration of a round — there's no shuffling layers around freely — so each move commits you to a path. That forward pressure is what makes it work as a daily game. You get one shot at the puzzle, the same one as everyone else in the world, and then you wait until tomorrow. That combination of constraint and ritual is what keeps it interesting.

Most daily puzzles involve a word, a photo, or a list you're slowly narrowing down through guesses. Sortl is different: there's nothing to guess. Either you find the right sequence of pours or you don't — luck plays no role at all. That puts it closer to Sudoku or nonograms than to Wordle. If you enjoy puzzles where the solution is a logical fact rather than a lucky deduction, this is the format for you. One board, one solution, no randomness, same for everyone.