What makes a puzzle Wordle-shaped.

A short field guide to the genre Wordle invented in 2021. Five traits define it. We use the term liberally because the shape is more useful than the word "Wordle clone."

The five traits

The Wordle shape

Daily reset. One puzzle per calendar day. New puzzle at midnight, not when you finish the last one.
Shared seed. Every player solves the same puzzle today. This is what makes the conversation possible: my friend and I can compare stats because we're looking at the same thing.
One-and-done. You finish (or fail) and you're out for the day. No grinding more attempts. No "watch ad to keep playing."
Share-string. A spoiler-safe artifact you can paste anywhere. Wordle's emoji grid is the canonical example. Without this, the daily mechanic doesn't compound.
One rule. The mechanic explains itself in a sentence. No tutorial. No menus. Open the page, see the puzzle, start playing.

If a puzzle hits all five, it's Wordle-shaped. Most daily-puzzle launches in 2022-2026 inherited at least four of them; many copied all five.

What is and isn't Wordle-shaped

Game	Daily?	Shared seed?	Share-string?	One rule?
Wordle	yes	yes	yes	yes
NYT Connections	yes	yes	yes	yes
NYT Strands	yes	yes	yes	mostly
NumFlow (ours)	yes	yes	yes (v2)	yes
Daily Cipher (ours)	yes	yes	yes	yes
Word Chain (ours)	yes	yes	yes	yes
Spelling Bee	yes	yes	partial	yes
NYT Crossword	yes	yes	no	yes
Free-to-play match-3	no	no	no	variable
Sudoku (random)	variable	no	no	yes

The bottom rows ("free-to-play match-3," "Sudoku random") are not Wordle-shaped. They miss the daily-shared-seed property, which is the linchpin that makes the conversation work.

Why the shape works

Daily reset = clean stopping point

Most casual games are open-ended: you play until you stop. The Wordle shape inverts this: you play one round, and the game tells you to come back tomorrow. This is the opposite of the "engagement maximization" pattern most apps optimize for, and it's why Wordle-shaped games are rare in the App Store top charts (they intentionally cap their per-day engagement).

Shared seed = water-cooler talk

Because everyone solves the same puzzle today, you can talk about it. "How many guesses did you take?" "Was today's hard?" These conversations are free distribution. They're also why share-strings exist: the conversation needs an artifact.

Share-string = zero-CAC growth

In Q1 2022, ~80% of Wordle's growth came from emoji-grid shares (per several Reuters analyses). That's not paid acquisition; it's friends posting their grid on Twitter and iMessage. Without the spoiler-safe artifact, the daily-shared-seed property doesn't compound. With it, the loop is self-sustaining.

One rule = no tutorial

The five-traits filter is harder than it sounds. If you can't explain the rule in one sentence, the game gets skipped. Wordle: "guess the 5-letter word." Connections: "group 16 words into 4 categories." NumFlow: "trace a path that hits the checkpoints in order." Each of these fits in a tweet.

Wordle-shaped games we recommend

An opinionated short list. Updated as we find new entries.

NumFlow (ours) — number-pattern path-tracing.
Daily Cipher (ours) — substitution cipher.
Word Chain Daily (ours) — word-ladder, one letter at a time.
Wordle — the original.
Connections — the most replayed of the NYT lineup post-Wordle.
Strands — best newcomer 2024.
Globle — guess the country by proximity heat-map.
Worldle — guess the country by silhouette.
Knotwords — letter-set crossword, daily mode is free.
Cell Tower — number-sum logic puzzle, mobile-first.

What we look for in a launch candidate

We're shipping more Wordle-shaped games at the rate of about one per 1-2 weeks (game #4, Grid Logic Daily, is in concept-phase). Our internal filter:

Solvable in under 5 minutes (3 minutes ideal).
One mechanic. No mode-pickers, no difficulty selectors at launch.
Mobile-friendly. Tap input where possible; keyboard otherwise.
Deterministic generation we can verify with a self-test page.
Spoiler-safe share-string with no answer leaks.
Single-file vanilla JS where possible (faster to ship, easier to audit).

If you've built a Wordle-shaped game we haven't seen, send it. We list good ones on /today after a vetting pass.

Why we're publishing this

Two reasons. First, framing the genre in five clear traits helps us decide what to build next. Second, search traffic for "wordle alternatives" and "games like wordle" is meaningful and we'd rather earn it with a real field guide than with a generic listicle.

The hub itself stays small. Three live games today. More shipping. The genre is large enough to grow into.