Speculative Fiction

A broad literary genre encompassing any fiction with supernatural, fantastical, or futuristic elements. 

Apocalyptic or post-apocalyptic fiction

Stories that deal with the aftermath of a catastrophic event that devastates humanity. The catastrophe can be manmade, such as a nuclear war, or a natural disaster such as an asteroid hitting the Earth or a new plague. 

Source: End of the World as We Know It: Apocalyptic, Post-Apocalyptic, and Dystopian Worlds

What is Dystopian Fiction?

The central themes of dystopian novels generally fall under these topics:

1. Government control

2. Environmental destruction

3. Technological control

4. Survival

5. Loss of individualism

Source: What is Dystopian Fiction? Learn About the 5 Characteristics of Dystopian Fiction With Examples

A sub-genre: Cli-fi (climate fiction) /ecological or environmental dystopia