Oh, lol. Actually we made those halfbroken and almostbroken egg sprites before discovering this page from spriters-resources. I am actually considering doing a unique egg stages system, which allows users to define as many egg stages before an adoptable is hatched. This way you do not define egg stages in levels, they are separate entities. It is a very good practice since having egg stages as levels can have problems when stats, moves, battle and contest system are implemented.