#FunBrainyApps showcase of z3DFillCubeByMatch for iPad: Starting from the center build a 3D cube by matching widget faces from the 3 cubes at the top. Rotate the cubes to see all the sides by drawing circles in the background. It's ok to leave empty space as long as spots are found to place the required number of cubes. Pack them in more densely by matching more than one widget face from the top cube to adjacent widget faces on multiple cubes in the center.