"Post-apocalyptic" refers to a setting or scenario that takes place after a catastrophic event has drastically changed or destroyed civilization. This event could be a nuclear war, a natural disaster, a pandemic, or an alien invasion. The world is often depicted as desolate, with remnants of the old society scattered throughout, and survivors struggling to adapt to their new reality. In post-apocalyptic stories, themes of survival, human resilience, and the consequences of technology or environmental neglect are common. Characters may face challenges such as scarcity of resources, hostile environments, and conflicts with other survivors. Popular examples of this genre include movies like Mad Max and video games like The Last of Us.