Start thinking in 3D !This is the first 3D sudoku puzzle worldwide on a cube which has one single puzzle set up on a whole cube, instead of 6 puzzles on 6 sides.To get back to the menu, just shake the device!Simple rule: fill the other empty cells with numbers between 1 and 16 (1 number only in each cell). All regions (sides), rows, columns must contain all the numbers between 1 and 16.To fill a cell, just select it by tapping on it, and simply grab a number and pull it over the cell and release. To remove a number, just tap on it (3 times) until it disappear.To mark an impossible number from possibilities on the side, just tap on it, and it will change to grey.To rotate the cube, just pull your finger on it to the way you want to rotate it.To rotate vertically, just grab with 2 fingers and twist it, or pull your finger left or right underneath the cube.To get back to the menu, just shake the device!Hope You will enjoy it.