Click on the game screen above. Solve Rubik's Cube by pressing scramble and then rearranging the faces so that each side of the whole cube has the same color. You can move the entire cube by dragging it with your mouse and you can roll columns by holding down CTRL and dragging the mouse over the column in the intended path. The column moving takes a while to get used to but it does work. (Personal Sidenote: I actually met the father of the inventor of the original Rubik's cube. He lived a few houses down from friends.)
Controls:
Move cube: Mouse dragging over any part of the cube
Move column: Hold down CTRL and drag mouse in intended path