A fun sorting puzzle called Stacked Animals offers colorful discs as game elements. By placing four disks of the same color in a container, you fill it and close it with a lid in the form of the head of some animal or bird. By distributing all the disks, you will complete the task at the level. With each new level, the set of elements will grow, as will the number of containers to fill. The challenges get more challenging and interesting in Stacked Animals. Follow the rules when moving items. You can only transfer the disc to an object of the same color or to an empty container.