Existentialist literature is a genre that explores the meaning and purpose of human existence, often through the lens of individual experience and subjective perception. These books often delve into themes of freedom, choice, and responsibility, and may challenge traditional notions of morality and societal norms. Existentialist literature can be introspective and philosophical, and may offer readers a unique perspective on the human condition and the search for meaning in a complex and often chaotic world.

The "Experimental" category of books is characterized by works that challenge traditional literary conventions and push the boundaries of form and content. These books often incorporate unconventional narrative structures, language, and themes, and may experiment with different mediums such as poetry, visual art, or multimedia. The goal of experimental literature is to create new and innovative ways of storytelling that challenge readers' expectations and expand the possibilities of what literature can be.

Speculative fiction is an umbrella genre encompassing narrative fiction with supernatural or futuristic elements. This includes genres such as science fiction, fantasy, horror, supernatural fiction, superhero fiction, utopian and dystopian fiction, apocalyptic and post-apocalyptic fiction, and alternate history. The unifying factor of speculative fiction is its departure from the narrative constraints of reality, exploring imaginative and often profound questions that challenge our understanding of the world and our place within it. These stories often delve into themes like the human condition, social commentary, and the exploration of philosophical and ethical dilemmas through the lens of the fantastical or the yet-to-be-possible. By pushing the boundaries of the known, speculative fiction invites readers to consider the myriad possibilities of existence and the potential consequences of our actions in worlds that are, at once, vastly different from and eerily similar to our own.

If you're interested in downloading this list as a CSV file for use in a spreadsheet application, you can easily do so by clicking the button below. Please note that to ensure a manageable file size and faster download, the CSV will include details for only the first 500 books.