This three dimensional puzzle invites players to arrange numbers on the faces of a rotating cube in a classic sudoku style. The game board is a volumetric figure consisting of six sides with three by three grids. Your task is to fill the empty cells with digits from one to six selected from the control panel at the bottom of the screen. Click on the numbers or the erase button and then tap the desired tile on the cube face to make a move. Hold and drag your cursor or finger across the screen to rotate the structure and find empty spots on other sides. Note that the dark numbers are pre-set and cannot be changed during the game. The game helps develop spatial thinking and concentration in a calm meditative atmosphere.