Rondoku

About

Rondoku is a single player casual puzzle game. It was developed by Lucas Demo and was released on October 23, 2025. It received overwhelmingly positive reviews from players.

Simple Rules, Deep Logic Fill circular puzzles with the correct numbers using just three simple rules. Rondoku is a calm and minimalist logic game that invites you to slow down, think carefully, and find satisfaction in clever solutions. 70 Hand-Crafted Challenges Every puzzle in Rondoku is designed by hand. With 70 unique levels, the game offers a thoughtful difficulty curve and a sense of…

Genres & Tags

Play Modes

Single-Player

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100%

Audience ScoreBased on 13 reviews

music2 positive mentions

Unique and clever twist on classic Sudoku, adding elegant and emergent logic through novel board shapes and additional placement rules.
Minimalist, smartly designed, and visually appealing with geometric mandala aesthetics that enhance the experience.
Contains a large number of progressively challenging puzzles offering hours of meditative and satisfying gameplay for puzzle enthusiasts.

No undo feature or effective note-taking tools in-game, making it difficult to track and test hypotheses, especially in complex later levels.
User interface can be inscrutable with unclear symbols and clunky keyboard navigation; some players find it more user-friendly to solve outside the game.
The final puzzles present a steep difficulty spike that some players find overly contrived and frustrating, souring the otherwise enjoyable experience.

music
2 mentions Positive Neutral Negative
100%
The game features no music, creating a quiet, focused atmosphere that enhances its meditative and satisfying puzzle experience.
- “No music, no hints, no mercy…but lots of satisfaction.”
- “The whole ambiance leans into quiet focus (there’s no music), which works surprisingly well if you enjoy the meditative side of puzzling.”
gameplay
2 mentions Positive Neutral Negative
100%
The gameplay is uniquely centered around filling an enso mandala using gradually introduced mechanics, creating a calming, zen-like experience that complements the game's book-based narrative structure.
- “Instead of columns, there’s a kind of Enso mandala that must be filled in using mechanics that are progressively introduced throughout the pages.”
- “It’s fascinating how the zen quality of the gameplay aligns perfectly with a game that, in its essence, unfolds through the completion of a book full of empty spaces.”