Pet Island is a development companion game based on blockchain technology. Players play the role of owners to adopt pets and accompany them to grow up. Divine pets are divided into four stages: incubation, infancy, growth, and adulthood. The owner can increase the pet's energy output and growth rewards through interactive behaviors such as feeding, playing, and dressing up. Different god pets have different qualities and attributes. Adult god pets can also combine with each other to hatch new pe