Hexways
16×16 Hex Killer Sudoku
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Giant 16×16 hex Sudoku with Killer Sudoku cages. Five difficulty levels, pencil mode, hints, pinch-to-zoom board and a relaxing Zen Mode. No ads, no internet.
How to play
Fill the giant 16×16 grid so that every row, column and 4×4 box contains the sixteen hexadecimal symbols — the digits 0 to 9 and the letters A to F — with no repeats.
Tap a cell to select it, then tap a symbol to place it. The row and column highlight to help you spot conflicts at a glance. Pinch to zoom in on the big board, and double-tap to jump between the full grid and a close-up. Stuck on a cell? Tap Hint to reveal the correct symbol.
Killer Sudoku cages
Dashed outlines group cells into cages, each with a target sum shown in its corner. The symbols inside a cage never repeat and must add up exactly — extra logic on top of the usual row, column and box rules. Prefer to add up in hex? Switch cage totals between decimal and hexadecimal any time in Settings.
Choose your difficulty
Five levels from Very Easy through to Extreme — from a gentle introduction to a serious challenge.
Track your score
Every correct symbol earns points — and solving quickly, keeping a streak going and finishing under the par time all add bonuses on top. Harder puzzles score the most. A wrong guess breaks your streak, so think before you tap.
Clean, distraction-free design
Choose from a selection of light and dark colour themes — no adverts, no internet required. Prefer a relaxed solve? Zen Mode hides the score and timer and drops all penalties.
If classic Sudoku has stopped stretching you, Hexways is the next level — a fresh giant puzzle every time.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Gary Watson, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Gary Watson
- Size
- 2 MB
- Category
- Games
- Compatibility
Requires iOS 16.1 or later.
- iPhone
Requires iOS 16.1 or later. - iPad
Requires iPadOS 16.1 or later. - Mac
Requires macOS 13.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 6 more
- English, French, German, Italian, Portuguese, Simplified Chinese, Spanish
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Support Developer $0.99
- Copyright
- © 2026 GLW Games