What are the different Sudoku modes?

Along with Classic Sudoku, the game includes special Sudoku modes that add new rules or change the board layout. The goal stays the same—fill the grid without repeating numbers—but each mode brings a different kind of challenge.

You may see these modes in Blitz, a time-limited bonus game where you can play an extra puzzle in one of the special modes.

🧮 Killer Sudoku

Instead of starting with given numbers, the board is split into small groups called cages. Each cage shows a sum, and your job is to fill the cage so the numbers add up correctly. It feels like Sudoku mixed with a math puzzle.

🔠 Giant Sudoku

A bigger version of Sudoku with a larger grid. Since there are more symbols to place, it uses numbers and letters. The logic is the same—it just takes longer and requires more focus.

🔗 Mega Sudoku

Two Sudoku boards connected into one puzzle. Some areas are shared, so your moves affect both sides. You're basically solving two puzzles at the same time, which makes it more strategic.

🧩 Jigsaw Sudoku

The grid still uses numbers 1–9, but the usual square 3×3 blocks are replaced with unusually shaped regions. It looks different immediately and forces you to scan the board in a new way.

❌ X-Sudoku

Classic Sudoku rules, plus one extra rule: the two long diagonals also can't repeat numbers. It's a small change that adds a lot of extra restrictions.

🟦 Windoku

Classic Sudoku rules, but with extra highlighted 3×3 zones inside the grid. Those zones work like additional mini-blocks, so you have more areas that must stay unique.

💡 Good to Know

Every mode still follows the main Sudoku rule: no repeats in rows, columns, and blocks. The special modes simply add a twist to make puzzles feel fresh.