BikuDoku is a puzzle game that takes on the concepts of two games (Sudoku and Rubik cubes). Unlike the typical Sudoku puzzle with gaps to fill in to complete rows/grids, BikuDoku gives a wrongly filled in Sudoku puzzle and requires that you rotate the number sets in the grids to make a completed Sudoku puzzle. It also has additional scrambled picture puzzles that you may rotate back to full shape. Bikudoku is an ideal game for children and adults as it both relaxes and challenges your brain to develop.