Demystify Play
Games that work with the Wi-Fi off
Every game here runs entirely on your device. No ads, no account, no tracking, and nothing to buy — once a game has loaded once, it works on a plane, on the metro, or with the router unplugged.
No betting, no money, no prizes. Every game teaches something.
100 games across 10 families · 1 knowledge pack (30 questions)
100 games
Board & strategy
Dice PathTip a die across a grid and land on the target square showing the face it asks for
Knight HopVisit all 25 squares with one knight, never landing on one twice
Peg JumpJump pegs over each other until only one is left
Queen PlacePlace six pieces on a six-by-six board so no two share a row, column or diagonal
Rope BridgeJoin numbered islands with single or double ropes until every count is met and the whole crossing is one network
Safe PathWalk from the left edge to the right across a board where some squares are unsafe, reading the count under your feet
Cards & dice
Card LadderStack every card into one column, one rank at a time
Card SortSort six cards using only side-by-side swaps, against a budget that is the exact minimum
Deal SumPick four cards that add up to the target
Domino LineLay every tile in one line so the touching halves match
Pair SumsClear a row by taking neighbouring cards that add to a climbing target
Rank SortSort a row of cards when the only move is to flip the front
Stack PopsSeven cards, one spare pile that only opens at the top. Send, push and pop them into rank order — every deal is built backwards from the finished run, so a winning line always exists.
Logic & deduction
Balance ScaleFind the one heavier weight with a pan balance, in the fewest weighings
Code CrackCrack a hidden four-digit code by ruling the impossible ones out
Colour CodeCrack a hidden four-symbol code from exact and misplaced counts
Fence LoopEach number counts its cell's fenced sides — draw one closed loop that satisfies them all
Gap LogicRearrange six digits until every left-of and gap clue fits
Grid CluesFill the squares the row and column numbers describe
Guard PostPlace four posts on a walled grid so every open square is watched along a row or column
Light GridPress a cell to flip it and its neighbours — turn every light off
Lock DialsTurn four dials until every published rule about their digits fits
Parity BitsFind the one flipped bit from which parity checks fail
Quick QuizTen adaptive questions from whichever knowledge pack you have
River CrossFerry six crates across a river two at a time — never leave a published pair alone on a bank
Signal FlipEach switch flips itself and a published set of others — turn all eight on
Toll RoadsOpen a set of toll roads that reaches every town for exactly the stated total, with the running total and the linked towns shown live
Water JugsThree unmarked jugs, a tap and a drain — pour until one holds exactly the target
Weigh OrderOrder six crates by weight in twelve weighings, letting transitivity do the rest
Memory & attention
Count BackA short run of digits appears, then hides. Type it back to front, one digit longer every round, against three lives and a key budget — and find the backward span behind it, which sits about two digits below the forward one.
Echo TilesEvery tile hides a five-beat rhythm — turn two over and judge whether their pulses fall on the same beats
Melody StepsA short run of pitch steps is drawn as a contour of bars, then hidden — play the shape back, one more step each round
Number SpanA sequence appears, then hides. Type it back. It gets longer
Pair FlipTurn two cards over. If they match they stay; if not, remember where they were
Path RecallA route is drawn across the grid, then hidden — walk it back one cell at a time
Recall GridA set of cells lights up on the grid, then hides — mark the ones that were lit, one more each round
Sequence EchoA pattern of shapes plays; repeat it back as it grows
Shape CountShapes appear on a small grid, then hide — and only then are you told which shape to count, from six shapes up to fifteen
Sort RaceA row of counts shows, then hides — put the crates back in order, smallest first
Story OrderA few everyday steps play one at a time, then come back shuffled — rebuild the order you were shown
Trail MarkA short route arrives as compass directions, then hides — walk it out on the grid from the marked start, one step longer each round
Number & maths
Clock HandsSet the time whose hour and minute hands are a given angle apart
Coin RowsEight counters in a row. Take one from either end against a rival that always takes the larger end, and finish on the exact total a solver proved is the most that row can give you.
Cut ShareCut a row of twelve numbers into shares that all total the same
Ledger CheckFind the one mistyped entry in a column of debits and credits that will not agree
Magic SquareSixteen numbers, ten lines, one shared sum — place the eight that are missing
Mini SudokuFill the six-by-six grid so no digit repeats in a row, column or box
Prime SweepTake every prime from the grid — one wrong pick ends the round
Roman ReadConvert between Roman numerals and ordinary numbers, four each way in one round, under a move budget — and every wrong answer names the rule it breaks.
Route PlanWalk a grid of costs to the far corner on exactly the stated total
Split BillNine items, three people — hand dishes across the table until all three totals match exactly
Sum LinksTrace a line of touching numbers that adds up to the target
Sum TriangleFifteen cells, each one the two below it added together — place the eight that are missing
Target 24Combine four numbers with + − × ÷ to make exactly 24
Trade RoutePlan a four-hop route between six towns that buy and sell one commodity so the purse closes on the exact target figure, with the running purse and the routes still open shown live
Unit SwapConvert between everyday units under a limited allowance of wrong answers — length, mass, time and data sizes, where every factor is an exact whole number and every wrong answer on the board is a named factor mistake.
Weight SplitDivide nine weights into two pans that weigh exactly the same
Reflex & timing
Beat KeepLock onto a pulse, then hold the tempo after it goes dark
Note LadderClimb a wrapping twelve-note ladder to the lit rung in as few presses as the fuse allows
Quick CountShapes flash — say how many of one kind you saw before the fuse runs out
Relay RacePress level with each gate as the runner crosses the track
Side StepPress what the word says, not the side it appeared on
Tap OrderTap the scattered numbers in order before the shared fuse runs out
Spatial reasoning
Colour LinesJoin five pairs of marked dots with lines that never cross and together cover all 25 squares, inside a move budget the solver worked out.
Flow FillWork out how many separate basins a grid of ground marks really holds, set one tap in each, then open the valve once — a corner join is two basins, not one.
Gear TrainFit gears along a rail until the hand turns the stated number of times, the stated way
Grid PaintCover every open square of a small board in one unbroken path, never crossing your own trail
Lane MergeSlide blocks along their lanes, merging the short ones between lanes, until the marked car can reach the gate
Mirror MazePlace a limited stock of 45° mirrors to bend the beam from the emitter onto the detector — the stock is the solver's proven minimum
Pipe FlowRotate the pipe tiles until the source reaches the drain
Shadow MatchRebuild a block arrangement from its front, side and top silhouettes — exactly one shape casts all three
Tangram FitCover a shape cut out of a 5x5 lattice with a fixed set of pieces — exactly one arrangement works
Tilt MazeTilt the board and the marker slides until a wall stops it — land it exactly on the exit inside the tilt budget
Tile & merge
Block FitFit every piece into the tray with no gaps and no overlaps — exactly one arrangement works
Chain ReactDrop grains, set off bursts, and shape the grid into the stated pattern
Colour SortPour the stacks until each tube holds a single shape
Crate StackRestack crates onto heavier ones until every bay matches the manifest
Flip TilesGet every tile onto one face — each pick turns over a whole row and column
Ring TurnTurn three stacked rings back into order — turning one carries every ring inside it
Shape ShiftTap a tile to advance it and its neighbours one shape, until every tile matches
Slide FifteenSlide numbered tiles into order around a single empty square
Stack OrderRebuild the tower on the goal stack, with the shortest line left in view
Tile RotateTurn a pivot and its four tiles spin a quarter-turn together. Line all nine arrows up inside a turn budget an exact solver measured.
Word & letter
Anagram PairsTwelve scrambled tiles, six real words — pair the two made of the same letters
Anagram RushFour letters, every real word they spell
Anchor WordsThree four-letter words on one spine — fill the four blanks from the offered letters so all three read
Idiom FillSix common English phrases with one word taken out — pick the word that completes each from four real candidates
Letter ChainChain real four-letter words out of nine dealt letters — each word opens on the letter the last one ended with
Letter DropTake four-letter words out of a well of letters — clearing one drops everything above it
Letter SwapA real word with two of its letters exchanged — find the one swap that puts it back
Prefix HuntThree letters and twelve endings — pick every one that finishes a real four-letter word
Rhyme PairsTwelve four-letter words, six rhyming pairs — match each word to the one that ends the same way
Syllable SplitTwelve fragments, six real words — rejoin each beginning to the one ending that finishes it
Word HuntSix real words hidden in a letter grid — claim each one by naming its two ends
Word LadderChange one letter at a time to turn one word into another
Word WeaveTwo four-letter words crossing at one square — fill the blanks from the offered letters so both are real
Casual & zen
Knowledge packs →Your progress →
How this works
- Offline, genuinely
- A game you have opened once keeps working with no connection. Nothing is streamed and nothing phones home — the whole game is on your device.
- The same puzzle for everyone
- Daily puzzles are derived from the date itself, not handed out by a server, so every player worldwide gets the identical board — and it still works if you are offline when the day turns over.
- Nothing to buy, ever
- No currency, no lives to refill, no streak to repair for money. Hints are a fixed allowance you earn, and when they run out they run out.
- Playable by everyone
- Every game is completable with the keyboard alone, never uses colour as the only signal, and honours your reduced-motion setting.