Rondoku
Release date: Oct 23, 2025
Developers: Lucas Demo
Publishers: Lucas Demo
Genres: Casual, Indie, Strategy
Categories: Single-player, Steam Achievements, Full controller support, Adjustable Text Size, Color Alternatives, Custom Volume Controls, Keyboard Only Option, Mouse Only Option, Playable without Timed Input, Save Anytime, Touch Only Option, Steam Cloud, Family Sharing
Supported languages: English, French, German, Japanese, Korean, Portuguese - Brazil, Russian, Simplified Chinese, Spanish - Latin America, Traditional Chinese, Turkish

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 intention in every diagram. A Puzzle Book Inspired by classic puzzle magazines, Rondoku is presented as a book. Flip through its pages freely and enjoy the quiet satisfaction of solving each puzzle, one by one, until the book is complete.