Small gods are a special classification of deity unique to the fictional Discworld universe created by author Terry Pratchett. They do however possess analogues in our world, particularly the Graeco-Roman concept of numina or the Japanese kami. They are the gods of slightly significant places; the hair rising on the back of your neck as you enter a suddenly still glade. They do not manifest as great anthropomorphic titans of the sky but rather, if they are noticed at all, as a simple, faceless presence. There are two very different kinds, by far the most common being those who have yet to accumulate enough human belief to obtain any true power or purpose. There is an almost infinite number of these gods on the Disc; Pratchett compares their hidden ubiquity to that of bacteria in our world.