Worksheets registry
Per-game audit log · which PlayMemorize games print as worksheets, which don't, and the documented reasoning for each.
Supports worksheets
ai-slop Tier 1 AI Slop presents a quote or proverb and asks the player to identify if it is real or AI-generated; the text-based choice survives on paper with a clean answer key.
alternative-cost Tier 1 Each round is a table of options with a benefit and a cost · computing net value (benefit minus cost) and picking the highest is a pure pencil-and-paper calculation that prints with one correct choice and a clean answer key.
analogies Tier 1 "A is to B as C is to ?" reasoning prompts. Pure text. Worksheet renders the analogy stem with multiple-choice completions. Standard SAT/aptitude-test format teachers already know.
ancient-wisdom Tier 1 Each round is a fill-in-the-blank proverb with one defensible completion and curated distractors; it prints cleanly as a lettered multiple-choice question with an unambiguous answer key.
question-is Tier 1 Each round is an answer plus candidate questions · pure text with exactly one correct choice, so it prints cleanly with an answer key.
backwards Tier 1 Word-spelled-backwards recognition. Worksheet shows the reversed word and asks student to write the forward spelling. Pure text.
cheat-the-system Tier 1 Each round is a short printed scenario plus four candidate strategies with exactly one dominant exploit · pure text that prints cleanly with an unambiguous answer key.
compounds Tier 1 Text-based multiple choice questions about compounds are perfect for worksheets.
connotation Tier 1 Each problem is a short literary passage with multiple-choice emotion options.
decay Tier 1 Each round is "how long does this item take to break down" with one correct duration among short text choices · prints to paper with a clean answer key and no loss.
deduction Tier 1 Each round is a set of text clues plus numbered options with exactly one that satisfies them all · pure text, so it prints to paper with a clean answer key and no loss of the elimination challenge.
define Tier 1 Vocabulary definitions. Pure text: "Define WORD" + 3 multiple-choice definitions. Localised word lists already exist for all 25 locales. Classic homework/SAT-prep format.
didyouknow Tier 1 Cloze fill-in-the-blank format renders perfectly on paper for all three topic modes.
example Tier 1 Each round is "pick the largest of N numbers" · pure text/numerals with one correct choice, so it prints to paper with a clean answer key and no loss.
expected-value Tier 1 Each round is a table of chances and dollar results · computing the probability-weighted average is a pure pencil-and-paper exercise that prints with a clean answer key and no loss.
facts Tier 1 True/false statements about facts. Most compact worksheet shape (80+ problems per page). Pure text statements.
emotions Tier 1 Pure text emotion-combination questions work perfectly as printable multiple-choice problems.
flanker Tier 1 The arrow row prints as plain text glyphs and the four direction choices reduce to a clean single-correct multiple choice.
fractions-faster Tier 1 Pick the largest of four fractions with guaranteed-distinct values, so one unique maximum makes the answer key unambiguous; the stencil shares the live round builder.
geofill Tier 1 Each round is a geography statement with one key word (a capital, country, river, or landmark) blanked and N options · pure text that prints to paper with one correct choice and an exact answer key.
historyfill Tier 1 Each round is a historical statement with one key word (a year, place, or person) blanked and N options · pure text that prints to paper with one correct choice and an exact answer key.
history Tier 1 All three modes (year / actor / deed) are multiple-choice text trivia that print cleanly. The stencil reuses the live round builder so the printed question and answer key match what the game shows.
library-organizer Tier 1 Shelve-the-book classification · the title, author, and shelving rule form the stem and the shelf labels are the choices. Prints cleanly as a multiple-choice question with a defensible answer key.
logicalfallacies Tier 1 Logical fallacies matching and identification translates cleanly into multiple-choice text worksheets.
market-health Tier 1 Each round names a market indicator at a high or low reading and asks for a good/bad verdict · pure text with one correct choice, so it prints to paper with a clean answer key and the understand-the-gauge challenge intact.
percentages Tier 1 Every round is a short percentage computation with one exact numeric answer · pure text math that prints with a clean answer key; visual-estimation rounds print as an equivalent exact "x of y parts" question with the same answer.
math Tier 1 Arithmetic problems are pure text. Difficulty 1-3 = +/- max 10, 4-6 adds multiplication, 7-10 adds division. Worksheet renders "a OP b = ?" with multiple-choice answers. Core teacher demand (Swedish elementary curriculum).
measure Tier 1 Each round is a geometry calculation with given dimensions and one correct numeric choice · classic printable maths, with the worked formula as the answer key.
molecule-mash Tier 1 Each step is a self-contained multiple-choice question · a molecule plus a curated transformation, with one correct product among real-molecule distractors · so it prints as a clean MCQ with a deterministic answer key re-derived from the same seeded branch the live game plays.
molecule-road Tier 1 The key planning decision prints as a self-contained multiple-choice question · the target, the molecule in hand, and every real move from it, with exactly one advancing toward the target · so it is a clean MCQ with a deterministic answer key re-derived from the same seeded route the live game plays.
moviefill Tier 1 Each round is a statement about a well-known film with one key word (a character, year, or title) blanked and N options · pure text that prints to paper with one correct choice and an exact answer key.
name-rarity Tier 1 Pick the rarer of two US first names · the live game is already a two-name duel, so the worksheet is a faithful two-choice question (only two answers) with the rarer name as the key. Prints cleanly as pure text.
nato-phonetic Tier 1 Each problem is a NATO spelling/letter multiple-choice question · pure text with one correct choice, so it prints perfectly to paper.
oldcurses Tier 1 Each round is "what did this archaic word mean?" · pure text multiple-choice with one correct gloss, so it prints to paper as a vocabulary quiz with a clean answer key. The history reveal is a screen-only bonus.
polyglot Tier 1 Foreign-language word translation. Pure text: source word + multiple-choice translations. Word lists localised across 25 locales via the shared emoji data set.
power-tower Tier 1 Power tower comparison translates cleanly into printable math worksheets.
prime-time Tier 1 Is N a prime number? Two language-neutral choices (Prime / Composite), exactly one correct; the stencil shares the live round builder so the printed number and answer key match.
proverbs Tier 1 Complete-the-saying cloze · the saying prints with one word blanked and the student picks the missing word. The stencil pins word mode so every printed proverb is fill-in-the-blank regardless of difficulty.
quotefill Tier 1 Each round is a well-known quote or proverb with one key word blanked and N options · pure text that prints to paper with one correct choice and an exact answer key.
read-upside-down Tier 1 A printed page rotates physically · the worksheet shows the prompt word rotated 180 degrees with upright text choices, a pure-text problem a student can verify by turning the sheet.
recipefill Tier 1 Each round is a cooking instruction with one word (a quantity, temperature, or technique) blanked and N options · pure text that prints cleanly to paper with one correct choice and an exact answer key.
redday Tier 1 The printable form pins the which-tradition mode: name a holiday, pick its tradition from localised labels, one correct from the holiday data. The stencil shares buildReddayRound() with the live game.
riddles Tier 1 Lateral-thinking riddles with multiple-choice answers. Each riddle is self-contained text; worksheet preserves the full puzzle without loss. Localised in all 25 locales via riddles-data.
roman-numerals Tier 1 Every round is a short numeric or roman numeral conversion with one exact answer · pure text math that prints with a clean answer key.
rule-flip Tier 1 The card position can be stated in the stem as plain text and the yes/no response is a clean single-correct choice.
sciencefill Tier 1 Each round is a science or nature statement with one key word (a number, element, or process) blanked and N options · pure text that prints to paper with one correct choice and an exact answer key.
sequences Tier 1 "What comes next?" sequences (arithmetic, geometric, Fibonacci). Pure text; worksheet renders the visible terms followed by ? and multiple-choice answers. Excellent for pattern-recognition drills.
solve-for-x Tier 1 A linear equation with blank working lines is the canonical printed algebra exercise · the stencil prints the exact generated equation plus one line per minimal step, and the constructed integer solution makes the answer key trustworthy.
sportfill Tier 1 Each round is a sports statement (a rule, record, or number) with one key word blanked and N options · pure text that prints to paper with one correct choice and an exact answer key.
strategy Tier 1 Each round is a printed historical situation plus four candidate actions with exactly one historically correct choice · pure text that transfers to paper with a clean answer key and no loss.
tactical Tier 1 Each round is a printed historical situation plus four candidate actions with exactly one historically correct choice · pure text that transfers to paper with a clean answer key and no loss.
transitions Tier 1 Pure text cloze · a two-sentence prompt with one connector blank and a short multiple-choice list prints losslessly, and the content bundle localises it in all 25 locales.
trig Tier 1 Language-neutral trig question ("sin(60°) = ?") with four exact symbolic-value choices, exactly one correct; the stencil shares buildChallenge() so the printed choices and answer key match the game.
what-reaction Tier 1 Each problem is a short literary passage plus a multiple-choice "what did the character do next" question · pure text with one correct answer, so it prints cleanly with an answer key.
which-breaks Tier 1 Each round is a two-named-sides contest with one defensible loser · pure text that prints as a clean A/B multiple choice with an answer key; the reveal math is dropped on paper but the prediction and the loser survive.
whichphilosophy Tier 1 Statement + multiple-choice philosophy label · pure text shape, prints cleanly with answer key.
who-would-win Tier 1 Each round is a two-named-contender matchup with one defensible winner · pure text that prints as a clean A/B multiple choice with an answer key; the reveal maths is dropped on paper but the pick and winner survive.
whodunit Tier 1 Scene clues and each suspect profile are emoji glyphs that print losslessly; the player marks the one suspect whose profile covers every clue, a clean multiple-choice item.
worth Tier 1 Worth provides clear logic puzzles that can be represented as equations on paper, making it suitable for printed worksheets.
chessmate Tier 2 Prints the mate-in-one position as a board diagram (letter-discs, B/W-print safe) and asks WHERE the marked piece moves to deliver checkmate. Answer choices are board squares (e.g. "D4"), not abstract A/B/C/D values.
connect-dots Tier 2 Ordered dot-to-dot is a canonical printed activity · the stencil prints the exact numbered dot field (no lines) for the child to draw on, and the multiple-choice question asks which picture the completed outline shows, with the curated figure name as the provable answer.
dominoforce Tier 2 Prints a domino chain with one missing tile and asks the student to choose the correct one from options. The matching rule is visual and logical.
estimation Tier 2 Comparisons topic produces printable multiple-choice questions; products and volumes are screen-only (numeric input and visual diagrams).
finnfemfel Tier 2 Prints two small (4 by 4) coordinate-labelled emoji grids with one cell changed; the student finds the differing square and names it (e.g. "C2") from multiple choice. A smaller mini-game version of the screen game.
geo Tier 2 Country/capital trivia. Worksheet renders text-only quiz form: "What is the capital of X?" + multiple choice. Loses the map visual but keeps the recall-of-facts drill. Strong curriculum tie-in.
match-the-number Tier 2 Counting pictured objects, reading ten-frames, and naming shaded fractions are classic printable worksheet forms. The stencil prints the exact SVG arrangement the value was scored from, so the answer key is machine-proven.
ordering Tier 2 Mini-game version · the items print numbered in a scrambled order and the student picks the numbered SEQUENCE that lists them in the correct order. Keeps the full-ordering skill, not just "which is first", on paper.
shapecount Tier 2 The printed page shows the exact enumerated figure as an SVG with numeric choices · counting triangles on paper is the classic worksheet form of this puzzle, and the machine-proven count makes the answer key trustworthy (spec §11 recommendation).
sudokuforce Tier 2 Prints the actual 9×9 puzzle in its exact state (givens filled, one target cell marked); the student picks the forced digit. The stencil renders the real grid, so the worksheet is the same deduction as the live game.
wheresmempi Tier 2 Prints a smaller (~30-cell) coordinate-labelled grid with MemPi hidden among emoji decoys; the student finds him and names his square (e.g. "C2") from multiple choice. The visual search survives on paper.
Not suitable for worksheets
meditate audio Meditate is an audio and time-perception exercise · the challenge is experiencing the silences between live tones, which a silent printed page cannot present.
music audio Audio-only · the round depends on hearing the sequence and tapping it back. A paper sheet cannot reproduce the playback half of the task.
next-tone audio Next Tone is audio-first ear training · the challenge is hearing a melody opening and judging the next pitch, which a silent printed page cannot present.
schedule-conflict logic Constraint tables can be printable later; excluded until the worksheet engine has table layouts.
akari Akari is solved by toggling bulbs on a rendered grid and watching light spread down rows and columns; a static sheet cannot show the illumination the deduction depends on.
hashiwokakero Bridges is solved by drawing connections between islands on a rendered board; the no-crossing and single-network rules cannot be conveyed on a static sheet.
butwhy But Why? is a cloze explanation mode whose printable form is covered by the Did You Know? worksheet at the hub level, so this card shares that stencil rather than adding one.
compound-interest Compound Interest generates fresh rates and horizons each round; pinning one scenario to paper loses the estimate-the-growth practice the game is built around.
crazy-comparisons Crazy Comparisons spins randomised real-world quantities each round; a static sheet would fix a single comparison and lose the spin-and-guess mechanic.
funfact Fun Facts is a cloze trivia mode whose printable form is handled by the Did You Know? worksheet at the hub level, so the standalone card adds no separate stencil.
infinityloop Infinity Loop is solved by rotating pipe tiles until every connection matches; the rotation mechanic cannot be reproduced on a static printout.
polymath-knowledge Polymath gauntlet host that dispatches into Geo + Facts + Define. Worksheets are generated per-game.
polymath-math Polymath gauntlet host that dispatches into Math + Sequences + Convert. Worksheets are generated per-game; the gauntlet has no standalone worksheet form (use the constituent games instead).
matrix Matrix reasoning shows a grid of rendered abstract figures whose relationships must be seen; reproducing the analogies on a static sheet would mean drawing the very figures the player compares.
wondrous-shannon Melody Lab teaches a tune by ear in growing segments; the listen-and-repeat loop has no meaningful static-paper form.
polymath-memory Polymath gauntlet host that dispatches into Memory + Ghost + Pi. Worksheets are generated per-game.
spatial Mental Rotation needs the player to turn rendered 3D figures in their head and compare them; a flat printed pair cannot stand in for the rotation the task is about.
mirror-draw Mirror Draw asks the player to fill cells to complete a reflection on a rendered grid; the symmetry construction cannot be entered or checked on a static sheet.
nurikabe Nurikabe is solved by shading cells into walls and islands on a rendered grid; the connectivity rules cannot be conveyed or checked on a static printout.
odd-one-out Odd One Out depends on comparing rendered figures by a shared visual rule; the set cannot be reproduced on paper without supplying the images the player must inspect.
odds Odds & Probability poses freshly generated chance scenarios; a fixed sheet would reveal the answer set and remove the on-the-fly probability judgement.
all "All games" hub page; not a single-round mini-game.
estimation-engine Product Estimate generates fresh quantities each round and rewards order-of-magnitude judgement; a fixed sheet would expose one answer set and lose the timed estimation feel.
polymath-reasoning Polymath gauntlet host that dispatches into Sequences + Analogies + Riddles. Worksheets are generated per-game.
rule-induction Rule Induction reveals examples one at a time and updates as you respond; the interactive feedback loop cannot be carried by a fixed printed page.
shikaku Shikaku is solved by dragging rectangles across a grid; a printed sheet cannot capture the spatial partitioning, so the puzzle does not survive on paper.
slitherlink Slitherlink is solved by drawing loop edges between dots on a rendered grid; the single-loop constraint cannot be presented or validated on paper.
tones Tone Memory is an ear-training game · the challenge is hearing and reproducing pitches, which a silent printed worksheet cannot present.
usefulfact Useful Facts is a cloze-style trivia mode whose printable form is covered by the Did You Know? worksheet at the hub level, so the standalone card does not duplicate that stencil.
whocomposed Who Composed It? is an ear-recognition game built on audio excerpts; a silent printed sheet cannot present the music the player must identify.
whopainted Who Painted It? shows a rendered artwork the player must recognise; a printed sheet cannot reproduce the paintings the question is built on.
whowrote Who Wrote It? presents localised literary excerpts to identify; the passages are the content and are covered by the Who Made This? worksheet at the hub level.
battlemate reasoning Excluded from worksheets · the game IS programming eight simultaneous orders and watching every unit resolve at once, with flanking and timing emerging from the clash. On paper it collapses to "pick the orders that win", which tests reading a fixed board, not the plan-and-resolve loop the game teaches.
blackbox reasoning Black Box requires interactive probing of inputs to reveal outputs and deduce the hidden logic rule, which cannot be reproduced on a static printed sheet.
minesweeperflag reasoning Minesweeper-style deduction on a hidden grid. Hidden-state mechanic cannot survive printing (every cell would be revealed at print time).
guess-who reasoning Excluded from worksheets · the game IS deciding when to commit with partial information, revealing clues one at a time and weighing an early risky guess against a safe late one. Printing requires showing every clue at once, which collapses it into a generic match-the-description exercise with none of the risk/reward loop; the colour emoji lineup also degrades badly in the b/w print template.
hash reasoning Logic black-box deduction · the probe-and-deduce loop is the experience, no paper analogue.
inference reasoning The round is a colour-coded mix of tokens drawn from competing bags; the best-explanation judgment relies on comparing colour proportions that do not reduce to a single clean printable text stem without colour reproduction.
masterminddeduce reasoning Mastermind code-deduction. Hidden code + interactive guess feedback IS the game; cannot be linearised onto paper without revealing the answer.
robot reasoning Excluded from worksheets · the game IS composing a program and watching it run step by step, with crash feedback driving the next edit. On paper it collapses to "pick the sequence that reaches the goal", which tests path-reading, not the plan-and-run loop the game teaches.
rubiks reasoning s Cube notation quiz. The quiz is text-based but the interactive " + +
skinner-box reasoning The round IS live experimentation against a hidden reward schedule · outcomes depend on press timing and press counts, and that hidden interactive state cannot be reproduced on paper.
hanoi reasoning Excluded from worksheets · printed form collapsed to repetitive 2^n-1 multiple-choice with near-identical decoys, drilling the formula by rote not the disk-moving skill.
salesman reasoning Excluded from worksheets · the game is dragging a closed tour into shape and watching the live length tick down toward the optimum. On paper it collapses to "pick the shortest of these four printed routes", which tests route-reading, not the search-and-refine loop the game teaches.
continuum sequencing The place-a-marker-on-a-scale response is a continuous position with a tolerance band, not a single-correct multiple-choice printable stem.
country text Three-fact incremental reveal · the reveal pacing is core to scoring. A printed sheet would show all three facts at once and remove the commit-early bonus that drives the loop.
hangman text Hangman needs turn-by-turn wrong-letter state and a live strike counter. On paper it becomes a word-list answer reveal rather than the game, so worksheets exclude it intentionally per user request 2026-05.
headsofstate text Heads-of-state quiz · supportable, design pass pending.
periodic text Periodic table drill · the colour palette is part of recall, hold for now.
wordsquare text Anagram-pool puzzle · the entry interface is the game, not portable to paper.
wordle text Mini-game variant is "fill in the missing letter" - printable in principle, but the stencil renderer for the dashed-tile layout is still pending design.
card-count timed Tempo and hiding previous values are the skill; paper would become ordinary arithmetic.
multi-tasker timed The core challenge is simultaneous timing and reaction; static paper removes the second task.
bounce visual The player aims by spinning bumpers against a live path; excluded until the print renderer can pose a fair static reflection puzzle.
bubblewrap visual Pure speed/tapping toy · the whole game is the timed pop-the-sheet interaction, which has no paper analogue.
bullet-mirror visual The player aims by spinning mirrors and only learns the outcome from the fired shot; excluded until the print renderer can pose a fair static reflection puzzle.
bullseye visual The whole challenge is judging the launch angle and how far to draw the bow in real time and releasing at the right moment · a static printed sheet cannot convey the live aim, the arc, or the angle-and-power trade-off, so nothing solvable survives on paper.
catchthecat visual Interactive containment puzzle · the cat reacts to each cell you block, so a printed board is either a single fixed position (trivial) or cannot represent the turn-by-turn play.
circlepuzzle visual Rotate-the-rings alignment toy · the whole game is the tap-to-turn interaction and its move budget, which has no paper analogue (a static diagram would just give the answer away).
circuit-assembly visual The prompt is a schematic drawing with a dashed gap and the answers are component-symbol drawings. The text-only stencil contract cannot represent picture choices on paper.
eras visual Era classification of paintings · the paintings are essential, paper version pending.
coast visual The whole challenge is reading a stone decelerating in real time and committing before it settles · a static printed sheet cannot convey the motion, the slowing, or the speed-vs-certainty trade-off, so nothing solvable survives on paper.
color visual Colour-sequence memorisation (Simon-style). Cannot represent colour sequences and timed playback on paper without losing the entire mechanic.
crocodile visual Pure-suspense toy · the trap tooth is randomised and only revealed by tapping; a printed sheet would either spoil the trap or be unsolvable.
cups visual Follow-the-ball shell game · the answer depends on a live shuffle animation you must track; a printed sheet either shows the final position (no challenge) or cannot convey the motion (unsolvable).
davinci-assembly visual The prompt is a machine drawing with a dashed gap and the answers are detached SVG pieces. The text-only stencil contract cannot represent picture choices on paper.
fastest-pour visual The round IS predicting an animated race · the player visually estimates criss-crossing tube lengths on a rendered apparatus and then watches the pours flow to verify. A static printout can neither convey the path lengths reliably in b/w nor show the race that makes the reveal meaningful.
finance visual Merged finance trivia · candlestick charts are visual; greeks + valuation scenarios are text but pair with the chart half. Same hold-pending-design call as the three former games it replaces.
fold-out visual Net folding is a 3D mental-rotation task: the player imagines a flat net wrapping into a solid, which a static paper grid cannot present without picturing the fold for them.
ghost visual "Which emoji disappeared?" depends on timed visual disappearance animation, which paper cannot reproduce. Static printed grid would simply mark the missing item and remove the memorisation challenge entirely. Excluded per user request 2026-05.
how-many-cubes visual The puzzle is reading two isometric 3-D cube renderings and judging how many copies of the piece fill the block · the text worksheet renderer cannot draw the cube shapes, so a printed version would lose the spatial mechanic.
instrument-assembly visual The prompt is an instrument drawing with a dashed gap and the answers are detached SVG pieces. The text-only stencil contract cannot represent picture choices on paper.
laser-bounce visual The player aims by spinning mirrors against a live beam; excluded until the print renderer can pose a fair static reflection puzzle.
load-bearing visual Every round turns on a scaled 2D diagram (beam cross-section, leaning stack, braced frame), and the print renderer cannot yet draw these structures faithfully, so it is excluded until it can.
loading visual Pure real-time reaction toy · the bar fills on a live clock and you tap to reset it, so there is nothing a printed sheet could ask a student to do.
memory visual Card-matching memory game · the face-down card → reveal → match mechanic IS the game. Static text descriptions defeat the purpose (no surprise reveal, no working-memory load).
mirror-symmetry visual Possible later, but current worksheet renderer does not preserve precise mirrored pixel/emoji grids.
mixing visual The prompt and answers are colour swatches and food emoji whose blend is judged by sight · the text worksheet renderer cannot show the colours mixing, so a printed version would lose the visual cause-and-effect.
mosaic visual Pixel-art completion · the trained skill is the "what is it about to become" recognition as the scanline paints the canvas. A printed sheet either reveals the finished painting (no challenge) or freezes it mid-scanline (unsolvable without context).
name-shape visual The prompt is a drawn geometric figure the player identifies by sight · the text worksheet renderer cannot draw the shapes, so a printed version would have nothing to name.
nuance visual Distinguish very-close shades of colour. Printer reproduction and B/W photocopying lose the colour distance the puzzle hinges on; the browser version is sub-pixel-precise and has no faithful paper analogue.
pathfinder visual The skill is holding a vanished arrow path in working memory; a paper sheet would leave the path visible and remove the memory step entirely.
pi visual Memorise digits of Pi. The single-correct-answer-string format and the in-game numpad + audio feedback are the entire learning loop; a paper "next digit?" sheet is just a digit lookup table.
portalhop visual The mechanic IS the simulated flight · on paper the player cannot launch the ball or verify a trajectory through a portal pair, so it fails the "could a teacher print this" test (spec §11 recommendation).
scratchcard visual Pure-luck reveal toy · the cards are hidden under foil and only uncovered by tapping; a printed sheet would either spoil every cell or be unsolvable.
shadow-cast visual Shadow projection needs a block read under a chosen light direction matched to its cast 2D shape; paper cannot render the interactive light cue that makes the puzzle fair.
shape-assembly visual The prompt is a drawn solid with a dashed gap and the answers are detached SVG piece drawings. The text-only stencil contract cannot represent picture choices, so a printed sheet would have nothing to compare.
shape-corners visual The prompt is a drawn geometric figure whose corners must be counted by sight. The text worksheet renderer cannot draw the shapes, so a printed sheet would have nothing for the student to count.
signal-switch visual The rule cue is the tile colour itself; on black-and-white paper the green/orange distinction that decides the rule disappears.
silhouette visual The whole puzzle is recognising a colour emoji flattened to a black silhouette via filter:brightness(0). Print/PDF engines (notably iOS) do not apply that CSS filter to colour-emoji glyphs, so the printed sheet leaks the full-colour emoji and gives the answer away. Skipped until a print-safe silhouette renderer exists.
stroop visual Stroop interference (colour word vs. ink colour). The interference effect requires the word and its ink colour to differ - printing in colour is unreliable, B/W loses the test entirely.
toy-assembly visual Both the prompt (a patent-style drawing with a dashed gap) and the answers (detached SVG pieces) are pictures. The text-only stencil contract cannot represent picture choices on paper.
vector-arrows visual The whole judgement is reading a fan of arrows at arbitrary angles and estimating their vector sum · the text worksheet renderer cannot draw the arrow field, so it would lose the entire mechanic.
volume-estimate visual Volume estimation compares three rendered 3D containers by length × width × height; a static paper sheet cannot convey the relative box sizes the player must read to judge which holds the most.
whackamole visual Pure timed-reaction toy · the moles appear and vanish on a real-time schedule, so there is nothing a printed sheet could ask a student to do.
mapsteps visual The puzzle is reading a rendered map · the house, the places dotted around it, and following the arrows from cell to cell. A flat text worksheet cannot draw the grid with its positioned markers, so a printed version would lose the spatial mechanic that makes the round solvable.
wireframe visual The mechanic is free-form line drawing · connecting dot pairs on a projected 3-D figure · which the multiple-choice text stencil format cannot capture; a printed version would reduce to tracing, losing the game.
circuit-breaker The puzzle hinges on the live output value updating as you toggle gates · a static sheet cannot show that interaction.
vocab The game is any-of-25 → any-of-25 languages with three card directions chosen at play time. A single printable sheet would have to freeze one language pair and one direction, so it cannot represent the game without significant loss.
gear-train The question is read off an interlocking gear diagram the worksheet renderer cannot yet draw on paper.
logic-puzzles Hub dispatches to six different visual grid-puzzle engines — the interactive grid IS the game.
patterns Matrix and rule-induction modes require generated visual grids; odd-one-out uses visual image sets.
power-grid The puzzle lives in the live network · the player toggles wires and watches the delivered power and the bulb update in real time. A static sheet cannot show that changing value, which is the whole interaction.
spatial-reasoning All three topics require interactive 3D/2D visual rendering that cannot be reproduced on paper.
whomade Art topic requires mosaic reveal image; music topic uses audio cues — neither is printable.