Hi, how can we help you?

What are the Sudoku rules?

What types of unique rectangles are there in Sudoku?

How do I begin a new game or restart my current game?

iOS: My cumulative score disappeared! How do I restore it?

iOS: Can I see how my score compares to other Sudoku players?

iOS: What are Achievements?

iOS: Why is my game closing unexpectedly?

iOS: Why is my game frozen?

Why won't my screen rotate?

If I pay to remove ads from Sudoku, will my scores carry over on my iOS device?

How do I remove ads from my game?

Why do I still see ads after purchasing the paid version of the game on my iOS device?

How do I turn off in-game sound?

iOS: Why is the ad volume so loud?

NOVEMBER 2025 - Sudoku Restore Purchase Bug

iOS: I paid to remove ads in Sudoku and I am still seeing ads

iOS: How do I get a refund?

Where can I find Brainium’s Privacy Policy?

I would like to Opt Out / Request Data Deletion

What is a Daily Puzzle and what does the calendar indicate?

iOS: My Achievements, Scores, Daily Game, or Game Center are not working!