Sudoku Rethink

Classic & Multi-Grid Sudoku

Explore over 18 Sudoku game types—from classic single-grid puzzles to expansive multi-grid formations designed to challenge your spatial logic:

Classic

Big

Huge

Colossal

Grid Sizes

Powered by a next-generation solving engine, Sudoku Rethink brings you bigger boards and deeper challenges. From lightning-fast sessions to long, logic-heavy marathons, you can scale your experience across four sizes—classic 9×9 up to 36×36—so every puzzle matches your time, focus, and skill level.

Sudoku Variants

Sudoku variants introduce additional layers of logic to the classic Sudoku. In addition to standard row, column, and region rules, these constraints challenge your strategy in entirely new ways. Sudoku Rethink offers over 36 unique variants that can be applied to your base game (Tap for details • Full tutorial in-app).

Beyond Numbers

Experience Sudoku through a new lens. Switch from classic digits to Astronomical and Ancient Greek symbols—an elegant visual shift that sharpens pattern recognition and adds rich, thematic depth to every puzzle you solve.

Classic Numerals Zodiac Signs Ancient Glyphs

Beginner

Easy

Medium

Hard

Master

Expert

Difficulty Levels

Designed for everyone, from casual players to logic masters. Start your journey with Beginner puzzles to learn the ropes, or test your absolute limits on Expert boards where every move requires precision.

6 Levels Smart Hints Journey Mode

🗺️

Journey

Story-Driven

➕

Sudoku Plus

Curated

📅

Daily

AI-Adapted

⚙️

Custom

Sandbox

Ways to Play

At the heart of the game are Categories—distinct puzzle types and variants. Experience these through four unique modes:

Journey: Story-driven gauntlets with strict deadlines and no assists.
Sudoku Plus: Curated wide-range of Sudoku collections (moe than 6000+ puzzles) ranging from easy to challenging.
Daily Challenges: Unique puzzles that use personalization AI to adapt to your specific skill level.
Custom Games: Build your own experience, choosing everything from grid size to rules.

Themes

A modern Sudoku experience built for focus and calm. Enjoy brain-training puzzles in a relaxing environment suited to your taste and mood. Pick from eight themes (and growing) and drag to preview each look.

Keyboard Styles

Designed for phone and tablet. Explore portrait and landscape, with either shortcut-rich Classic controls or a minimalist, button-free layout.

Cloud Sync & Leaderboards

Never lose progress. Compete globally or find rivals in your area.

Cross-Device Sync

Seamlessly save progress across your phone, tablet, and web

Global Rankings

Climb the ladder and see how you rank against the world

Local Rivals

Filter leaderboards to find top players in your country