CatDog World: After Humans is a free Android strategy game set in a post-apocalyptic environment where players assume the role of a shelter chief. The game unfolds in the Kingdom of Akron, recovering from a catastrophic event that has left animals struggling for survival amidst extreme heat and dwindling resources. Players must construct and expand their animal shelter while managing resources and navigating challenges to restore peace and prosperity.

Key features include shelter construction, where players can build unique structures, and partner recruitment, allowing users to gather a diverse team of animal companions. Strategy gameplay is central to the experience, requiring players to manage territory expansion, craft survival strategies, and form alliances to combat threats from wild beasts. As players explore the micro world and uncover secrets, they compete for resources and strive to become the ruler of this new kingdom.