threeDCube (com.serenegiant.threedqube) on Google Play
There are three type games of 3x3, 4x4 and 5x5 sub cubes.If you have large screen tablet like nexus7, you can also play 6x6 and 7x7(600dp and more screen width required). The first game is very very easy and proceeding the game it become difficult.But there is nothing to be concerned about it even if you are beginner because unlimited UNDO and automatic saving help you to solve.Flicking other than cube makes the whole cube rotate.Flicking on the cube makes the set of sub cubes rotate.