
Raise a Japanese giant salamander from a fragile egg into a fully grown guardian of the stream in Ōsanshōuo, a quiet real-time life simulation inspired by Japan’s rivers, seasons, and folklore. Care for your companion through feeding, affection, cleaning, and changing day-and-night cycles as it grows from larva to juvenile to adult, then complete the journey by returning it to the wild. With atmospheric animated scenes, gentle music, and a heartfelt ending, Ōsanshōuo is a small, meditative game about patience, stewardship, and knowing when to let go.




Raise a Japanese giant salamander from a fragile egg into a fully grown guardian of the stream in Ōsanshōuo, a quiet real-time life simulation inspired by Japan’s rivers, seasons, and folklore. Care for your companion through feeding, affection, cleaning, and changing day-and-night cycles as it grows from larva to juvenile to adult, then complete the journey by returning it to the wild. With atmospheric animated scenes, gentle music, and a heartfelt ending, Ōsanshōuo is a small, meditative game about patience, stewardship, and knowing when to let go.