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App Store
Grounded
6/10

Cat Queens

Tap to place a cat in each colored zone of a 9x9 grid, making sure no two cats share a row, column or diagonal.

Core mechanic

Reason out which tile in each colored region satisfies the no-touch rule, place cats one at a time, use 3 lives per puzzle.

Controls

Single-thumb tap an empty tile to place a cat; double-tap to remove a cat; tap-and-hold a tile to flag a guess.

Theme

Meowdoku's cats-in-territories logic re-skinned with chunky cartoon cats on paw-print pastel zones.

Why now

Meowdoku is #1 free in Canada with 4.8 stars — the sudoku+minesweeper cat logic is hot, and a one-thumb tap-to-place version trims the friction.

Signals · overall 6/10
Hook
7/10

Meowdoku by Oakever Games has 4.81 stars across ~82K App Store ratings, confirming cats + Queens/Sudoku logic is a proven, high-engagement hook.AppBrain: Meowdoku rated 4.81/5 with 82K ratings, free, 248MB

Virality
6/10

Oakever's Meowdoku reportedly hit #1 free in Canada with very high star-rating volume, and multiple walkthrough/marketing sites (meowdokugame.org, dokukitty.com) have spun up around it — strong share/stream potential for the cat variant.Meowdoku! live on Canadian App Store with tractionThird-party walkthrough/SEO site shows organic search interest and viral funnel

Simplicity
7/10

Single-thumb tap/double-tap/hold controls are standard puzzle UX; colored-region Queens puzzle generation has open-source references (LinkedIn Queens, infinitepuzzles.com), but a generator + level pack is more than a weekend build.

Monetization
6/10

3-lives + hint/undo mechanics map cleanly to rewarded video and interstitials — standard for hypercasual puzzles; however, logic-puzzle eCPMs run below action hypercasual and Meowdoku is ad-supported free, capping ARPDAU.Meowdoku Play Store listing confirms free-to-play model with hint mechanics

Whitespace
2/10

Cat-Queens niche is already crowded: Oakever's Meowdoku, a separate 'Meowdoku: Cat Sudoku Puzzle' by infseekstudio, plus 'Cat Sudoku' and 'Queens! Logic Puzzles' (id 6762375479) — at least 3–4 direct cat-queens competitors live, plus LinkedIn Queens itself.Second 'Meowdoku: Cat Sudoku Puzzle' by infseekstudio — direct competitor'Cat Sudoku' on Play Store — another cat-queens style game'Queens! Logic Puzzles' — non-cat but same mechanic, already in stores

Meowdoku! · #1 top free · CA · Oakever GamesApp Store · 2026-07-19 (6d ago)