Stack your pieces on top of your opponent's in order to completely conquer them! Take turns moving small, medium and large pieces in order to stack others. Small pieces can stack on top of any piece, while large pieces are not as useful. Once your opponent is unable to move, you win! Tap a piece to select it, and tap your destination to move. You can move on top of a stack one level at a time and down as well. In one player mode, the computer will respond, and in two player mode, players can alternate on a device between red and blue.