Osteoblasts — is a skeletal skeleton RPG about skeletons and skeletons. If you are not undead, leave this page immediately, otherwise you will face the law of Skulls and Bones. In Osteoblasts, you play as a creepy, scary skeleton, raised from the dead by a mysterious witch cat in search of a target. You can choose a class and go on frightening adventures, battling your nemesis the dogs that have buried you from the depths below.