What's a StackWord crossword?
It's our own invention — a cross between a crossword and the tile-stacking word games you may know from your phone. From the crossword side it takes the part we love most: proper clues, the little aha of retrieval, our hand-curated words. From the stacking side it takes the toy-like physicality: a heap of letter tiles that comes apart word by word, with a genuinely satisfying crumble. What makes it a puzzle rather than a toy is the layering. Each answer's letters come free exactly as its clue comes up — some surfacing under your own fingertips mid-word — so the pyramid enforces the solving order the way a crossword's grid enforces its crossings. And each size is one fixed pyramid: you'll come to know its shape like a favourite mug, while the letters deal fresh every game.
Classic stacking games make you deduce the hidden words from bare letters, which gets brutal fast. Giving each word a real crossword clue turns that cliff into a staircase — which is, after all, the entire personality of this website.
How to play
- One clue is active at a time, in numbered order. It's shown big above the stack with empty letter slots — (5) means five letters.
- Tap the free tiles to spell the answer. Bright tiles are in play; the grayed ones peeking out underneath are still buried. A tapped tile hops into the slots and off the pile — uncovering whatever sat beneath it, mid-word. Sometimes a word's own third letter is hiding under its first; picking in order digs it out.
- Change your mind? Tap a filled slot or press Backspace. Taking back a letter also takes back the ones after it — they may have been standing on the tile you just returned. On a keyboard you can simply type.
- Fill all the slots and it checks itself. Right answer: the word's tiles crumble away for good. Wrong answer: a shake, and the letters hop home for another go.
- Twin letters are interchangeable. If two E's are showing, tap whichever you like — the pyramid quietly makes sure your pick is one the word can still be finished from.
- Stuck? Reveal word clears the active word for you. (A revealed puzzle doesn't count towards your solved tally — house rules.)
The stack is the hint system
In a regular crossword, when a clue stumps you, the crossing letters bail you out. A StackWord has no grid — but the pyramid plays the same role. Most of the active answer is in play right in front of you, mixed with decoys belonging to later words — and if a letter seems missing, it's waiting one layer down, under a tile you haven't used yet. Can't summon a five-letter word for Bouncy accordion dance? Read the bright tiles like a ransom note: P, L, K, A, O and a few impostors. Between the clue, the length, and the letter bank, the answer usually taps you on the shoulder. And the buried letters aren't hidden either — peek ahead and you can start guessing later answers before their clues even arrive.
There's a lovely built-in mercy, too: since solved tiles leave the table, the decoys thin out as you go, and the last word's letters are exactly the tiles left standing. The puzzle finishes with its own victory lap.
Tactics from the workshop
- Count before you tap. The slot count is a free filter — if the clue says (5), ignore every reading of the tiles that doesn't use five.
- Watch the impostors. The extra bright tiles belong to upcoming words. If a Q is sitting on top doing nothing, some later clue wants it — file that away.
- Read the basement. Buried tiles are dimmed, not blindfolded — we never let a tile hide another one completely, so every letter keeps at least half its face showing. A glance under the top layer tells you what's coming, and sharp solvers work out clue 4's answer while clue 2 is still on the table.
- Guess boldly. A wrong check costs nothing — the letters just hop back. If a plausible word fits the slots and the tiles, try it on.
- Endgame is a freebie. By the final clue the stack IS the answer, scrambled. Even if the clue means nothing to you, the anagram is right there — our anagram crosswords make a whole puzzle out of exactly that move.
Fair-play rules we build into every stack
Every StackWord is dealt by dismantling the pyramid in play order — the letters are placed along a legal tile-by-tile teardown, so solving the clues in order, letter by letter, always works: each letter you need is uncovered by the time you need it, often by your own previous pick. We machine-check that promise on every puzzle before it reaches you. The pyramid plays fair with your eyes too: no tile is ever completely hidden — every buried letter keeps at least half its face clear. And duplicate letters can never trap you: when two of the same letter are showing, we quietly check the word can still be finished before binding your tap to a tile, so a borrowed E won't strand something you need later. There's no sneaky vocabulary either — answers come from the same friendly, hand-curated word pool as our minis, three to seven letters long.
For parents and teachers
StackWords are secretly a spelling drill wearing a party hat. The clue makes the brain retrieve the word; the tiles make the hands spell it letter by letter, in order — reading and writing practice in one pass, which is gold for early readers and ESL learners. The one-clue-at-a-time structure also keeps overwhelm low: there is always exactly one job to do. For worksheets, open Download a puzzle pack under the puzzle — on paper the whole heap is printed with the in-play tiles in bold, and solvers cross letters off as they use them, freeing the tile each one was covering. Add a name & date line, keep the answer key page for yourself, and try large print for young pencils. Tell us what your classroom needs — we build fast.
Common questions
Can I solve the clues out of order?
No — and that's the game. Clue 3's letters are physically buried under clues 1 and 2, so the order isn't a rule we ask you to follow, it's how the stack is built. You can absolutely read ahead, though, and plotting future answers from half-buried letters is half the fun. If free-order solving is more your speed, a regular mini or a fill-in lets you roam.
Two of the same letter are showing — which one do I tap?
Whichever you like. Before your tap lands, the pyramid quietly checks whether the rest of the word could still be dug out afterwards, and binds your pick to a tile that keeps the word finishable — so you can never wedge the puzzle by picking the "wrong" twin.
What are the sizes?
Small is five short words on an 18-tile pyramid that starts with just two tiles showing — a coffee-sip puzzle with a cheeky opening. Medium is six five-letter words on the classic 30-tile pyramid, our house favourite. Big is eight words climbing to six and seven letters on a 46-tile, four-layer monument. Your device remembers which you prefer.
Does Reveal count as solving?
The word clears, the game goes on — but the puzzle won't count towards your solved tally. Same rule as everywhere on this site: peeking is legal, it's just not winning.
Can I print StackWords?
Yes — Download a puzzle pack builds a PDF with the heap drawn tile by tile (bold in-play tiles, gray half-covered ones), the numbered clues with write-in lines, and an optional answer key where every tile shows which word it belongs to. On paper you cross letters off instead of tapping — pleasingly, it works exactly the same. Printed puzzles won't reappear online on this device.
Will I ever get the same puzzle twice?
No — your device remembers every combination of words you've cleared here and deals fresh stacks, drawing on thousands of clued words. The full recipe is on how we make our puzzles.
Is "StackWord" a real puzzle type?
It is now! Tile-stack word games are a genre of their own, and crosswords are, well, crosswords — as far as we know, nobody had bolted proper crossword clues onto a letter stack before. We named it StackWord and this page is its home. If you invent a better tactic than the ones above, write in and we'll add it with your name on it.