Kropki 3D Sudoku

Overview

Kropki 3D Sudoku is a mobile puzzle game that reimagines classic Sudoku on a three-dimensional cube. Each face of the cube must contain digits 1 through 9 without repetition, and Kropki clues along the edges provide constraints: white dots indicate consecutive numbers, black dots indicate doubles. The game offers a calm, washi-inspired aesthetic and multiple modes including a campaign ladder, daily challenges, a Genius track with 100 puzzles, and puzzle code sharing. It is designed for puzzle enthusiasts seeking a fresh spatial twist on traditional logic puzzles.

Key Features

• 3D Cube Board: The playing field is a cube with six faces, each a 3x3 grid. Digits must be placed so that each face contains all numbers 1-9 exactly once, adding a spatial dimension to standard Sudoku logic.
• Kropki Clues: White dots on edges indicate that two adjacent cells contain consecutive numbers (difference of 1). Black dots indicate that one number is double the other (ratio 2:1). These clues guide the solving process.
• Campaign Mode: A curated ladder of levels that progressively introduces the game mechanics. Players can replay earlier stages at any time to practice.
• Daily Challenge: A new puzzle is available each day for all players. Features include streaks, personal best times, and online leaderboards for competitive play.
• Genius Mode: An extended post-campaign track with 100 complex puzzles designed for experienced solvers. Unlocked after completing the campaign.
• Puzzle Codes & Sharing: Players can import and export puzzles using codes or QR codes, allowing them to challenge friends with the same layout. The app includes a QR code scanner for easy import.
• Local Progress Storage: Game state, settings, and in-progress puzzles are saved locally on the device, enabling offline play and resumption of unsolved boards.
• Optional Online Services: Players can register a nickname for leaderboards and community features. The app stores only game-related data (nickname, times, puzzle codes) and does not share or sell personal information.

How It Works

Players start by selecting a mode from the home hub. In campaign mode, they progress through a series of puzzles with increasing difficulty. Each puzzle presents a 3D cube with some cells pre-filled and Kropki clues on edges. Using the number pad, players fill empty cells while respecting face uniqueness and clue constraints. The app provides undo, hints, and note-taking tools. Upon solving, a victory screen shows time and personal best. Players can share puzzle codes via QR cards or import puzzles from others.

Who It's For

Kropki 3D Sudoku is built for puzzle enthusiasts who enjoy logic games and are looking for a novel twist on Sudoku. It appeals to casual mobile gamers seeking a calm, meditative experience as well as hardcore solvers who want challenging puzzles in Genius mode. The game is suitable for all ages and requires no prior knowledge of Kropki puzzles. It is ideal for individuals who appreciate minimalist design and offline play.