Color Sudoku to play online. Sudoku puzzle game but with colours instead of numbers. There are nine different colours, instead of numbers from 1 to 9. You have to place the colours in the puzzle so that they do not match in rows and columns, and at the same time there are all 9 colours in each sub-square of the sudoku. Choose the level, from easy to very difficult and even unhealthy. You can try the daily challenge colour sudoku.