Alien design challenges: - Sensory organs not arranged as a face. - Brain is not located in the head. - Neural system is not centralized in a brain. - No head at all. - What is THAT for?! - Asymmetrical. - Non-sexual reproductive organs. - No internal reproduction (eggs, fetuses.) Alternate reproductive strategy. - Non-sexual distinctions/variations/specialized forms. - Manipulator parts that are not hands or claws or tentacles. - Pellage that is not fur, scales, or feathers. - No terrestial leg/foot plans. - No bones but also no exoskeleton. - No teeth/lips or mandibles around the mouth. - No lungs or breathing holes, alternate respiration - no respiration? - Culture diversity across different populations of the same species. Local customs. - Clothing, or other body wear, modifications, jewellery. - Foods and crafts. - Social structure: distribution of wealth, work, and social responsibilities, caring for their elderly and young. - Do they even have elderly and young? Alternative life cycles? More?
