Library

Exclude specified letters from the entire text.

Every word must contain a specified letter.

Use only one specified vowel throughout the text.

Exclude letters with ascenders (b,d,f,h,k,l,t) or descenders (g,j,p,q,y).

All words must start with the same letter.

First letters of each unit follow the alphabet sequentially (A→Z).

Use every letter of the alphabet except one specified missing letter.

Replace every noun (or specified word class) with the Nth word following it in a dictionary.

Each unit (word or line) is one unit longer than the last in a growing or shrinking sequence.

Word lengths follow the digits of π (3.14159...). Each word has exactly the number of letters indicated by the next digit.

All words must be monosyllabic (single syllable).

No words of Latin, Greek, or French origin. Use only Germanic/Anglo-Saxon roots.

Compose a text entirely from lines or phrases of existing works (collage poetry).

Remove words from a source text, leaving only a selected portion visible to reveal a new poem.

Each sentence must begin with the last word of the previous sentence.

The text reads the same forwards and backwards at the specified level.

The first letters of each unit (line, sentence, or paragraph) spell a target word or phrase.

The text must be an anagram of the specified source — same letters rearranged.

Swap the initial consonant sounds of adjacent words.

Extract a haiku (three lines of 5-7-5 syllables) from a longer text.

Six end-words permuted in a fixed pattern across six 6-line stanzas plus a 3-line envoi.

A 19-line poetic form with two alternating refrains across five tercets and a quatrain.

Combinatoric sonnet strips where each line can be independently chosen, creating 10^14 possible sonnets (Raymond Queneau's Cent Mille Milliards de Poèmes).

Fixed word-count pattern per line, creating a rhythmic structure.

Replace each word with its dictionary definition, creating an expanding chain.

Roman numeral letters (I=1, V=5, X=10, L=50, C=100, D=500, M=1000) in the text sum to a target number, typically a year.

Write without any form of the verb "to be" (am, is, are, was, were, be, being, been).

Systematic sentence permutation using the R × S method: choose R words from sentence S and permute them through all possible positions.

Text must contain every letter of the alphabet at least once.

No letter may repeat. Scope is the whole text or each word (scope: "text" | "word").

Each line uses every letter of the alphabet except one "absent" letter; the absent letters spell a hidden word (params.absent: string).

Only use the specified colors from a restricted palette.

Only a single hue with varying saturation and lightness is allowed.

Only complementary color pairs (colors opposite on the color wheel) may be used together.

The canvas is divided into a strict grid, and each cell operates as an independent visual unit.

Enforce reflection or rotational symmetry across the canvas.

Sort pixels by a specified channel (red, green, blue, hue, saturation, or lightness).

Render the image using only dithering patterns (no continuous tones).

Only circles, triangles, and rectangles may be used as visual elements.

The image reads the same forwards and backwards (visual palindrome).

Visual elements may only appear within predefined mask regions.

All lines in the composition must be curved — no straight edges allowed.

Each section of the canvas uses shapes derived from one letter of the alphabet.

Only notes from a specified scale may be used.

Only specified rhythmic durations (in beats) may be used.

A melody is imitated after a fixed delay by one or more voices.

The composition sounds the same forwards and backwards (crab canon).

Multiple voices play in different time signatures simultaneously.

Exclude specific pitches from the composition.

Only certain intervals (in semitones) between consecutive notes are allowed.

A specified percentage of the composition must be silence (no notes playing).

All 12 chromatic tones must be used before any pitch can repeat, following Schoenberg's serial method.

Aleatoric composition using constrained randomness — pitches and rhythms determined within bounds.

Two identical phrases played simultaneously at slightly different tempos, creating evolving phase shifts.

Each shot must have exactly the specified duration (in seconds).

Each shot must adhere to a predefined color palette or color progression.

The film's shot sequence reads the same forwards and backwards — a visual palindrome.

No consecutive shots may have the same camera angle, framing, or subject — cuts must be motivated.

The camera must remain stationary — no pans, tilts, zooms, or tracking shots.

Each transition must be a match cut — a visual or audio element connects consecutive shots.

Shots are juxtaposed to create intellectual or emotional meaning through collision — each pair of shots must create a third concept (thesis + antithesis = synthesis).

Audio and visual tracks must be in deliberate counterpoint — sound never directly illustrates what is seen.

Restricts the maximum number of states (passages/choices) in a storyline.

Ensures every node in the storyline has a reachable path to a terminal (end) node.

Restricts option selection (transition/choice labels) text to exclude certain characters.

Bounds the maximum number of outgoing choices (transitions) from any storyline node.

Every passage must be reachable by following choices from the start node — no orphan passages.

The storyline must offer at least a minimum number of distinct endings (terminal passages).

Bounds the maximum number of incoming paths that may lead into any single passage — the inverse of a branching limit.

The storyline graph must be a directed acyclic graph — no sequence of choices may return the reader to an earlier passage.

Every branching passage must offer the same number of choices — a uniform fan-out across the whole storyline.

Bounds the number of distinct state variables (inventory items, flags, counters) the storyline may track across its metadata and transition conditions.

Every choice offered from a single passage must have a distinct label — no passage may present the same option text twice.

Every non-terminal passage that leads anywhere must offer at least a minimum number of choices — no single-exit corridors.