this is wonderful. i love the rocks, the little bits of interactivity you allow. art and sound are perfect fits for the 64x64 limitation. i really enjoyed making my rock completely happy, feeding, petting, and playing ball. noticed the rock gravitates toward my pointer when happy. unfortunately for my rock, i then realized you can also throw it against the walls. do this enough to make the rock sad, and it'll begin avoiding the pointer. very nice attention to detail. thanks for sharing!