Big Sudoku Collections contains sudoku puzzles of different sizes from 6x6 to 16x16. It also contains special types: Flower Sudoku and Butterfly Sudoku.

Basic Rule: Fill numbers in the board such that every row, column and region contains one occurrence of each number.

Flower Sudoku: combination of 5 sudoku puzzles.
Butterfly Sudoku: combination of 4 sudoku puzzles.

Free play through hundreds of levels.

**** Big Sudoku Collections features ****

# Content
- 4 difficulty levels
- 800 free levels

# Features
- "Hint" auto fills the board with memo that has no direct conflicts with other numbers
- Highlight wrong number
- Highlight same numbers as you select a number on board
- Autosave the process of unfinished levels
- Record best completion time for each level

# Challenge
- Game Center Achievements
- Try to complete as many levels as possible