Crossoku. Sudoku X.
Diagonal Sudoku X Challenge
About
This app offers a unique twist on Sudoku by adding diagonal constraints, creating new strategic challenges. It features multiple difficulty levels, a campaign mode, daily puzzles, and interactive technique guides. Enjoy a clean design and smart solving tools for an enhanced puzzle experience.
What's New in Crossoku. Sudoku X.
1.2.4
April 3, 2026
What's New in v1.2.4: - Fixed Google Sign-In not completing on iPad and iPhone - Fixed authentication callback issues - Bug fixes and performance improvements Thank you for playing Crossoku!
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Crossoku Premium Monthly
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FAQ
What makes Crossoku different from regular Sudoku?
Crossoku introduces a diagonal constraint, meaning both main diagonals must also contain digits 1-9 exactly once. This adds a new layer of logic and strategy not found in standard Sudoku puzzles.
Does Crossoku have ads?
Yes, Crossoku contains advertisements. These ads are present in the free version of the game.
What are the subscription options for Crossoku Premium?
Crossoku offers a monthly subscription for $2.99 and a yearly subscription for $17.99. The yearly plan includes a 7-day free trial.
Can I play Crossoku offline?
Yes, Crossoku is fully playable offline, allowing you to enjoy puzzles anywhere, anytime without an internet connection.
How many difficulty levels are available in Crossoku?
Crossoku features six distinct difficulty levels: Easy, Medium, Hard, Expert, Pro, and Master, catering to players of all skill levels.
Is there a way to learn new techniques in Crossoku?
Yes, Crossoku includes an interactive Technique Library where you can browse and practice diagonal Sudoku techniques, with smart hints explaining each move.
What devices is Crossoku available on?
Crossoku is available on iPhone, iPad, and iPod. It also supports full landscape and portrait orientation.
How often is Crossoku updated?
The latest version of Crossoku is 1.2.4, and it was last updated on April 3, 2026. Updates typically bring new features, bug fixes, and performance improvements.
