

It recounts the story of a two-dimensional world inhabited by living geometric figures: triangles, squares, circles, etc., and explores concepts of other dimensions (or universes) including Portland, Lineland, and Spaceland.

Edwin Abbott Abbott, mathematician and theologian, wrote Flatland (1884), also known as Flatland: A Romance of Many Dimensions.The hero Niels Klim slips into a cave and reaches Nazar, a planet inside the hollow Earth, where societies and beings represent satirical comments to existing contemporary ones. Ludvig Holberg, Danish-Norwegian author, historian, and philosopher wrote Niels Klim's Underground Travels (in Latin as Nicolai Klimii iter subterraneum, 1741).Margaret Cavendish, Duchess of Newcastle, wrote The Blazing World (1666), a book far ahead of its time, in which the heroine passes through a portal near the North Pole to a world with different stars in the sky and talking animals.While there, she witnessed flowers growing 7-feet tall, cat elections, dog's mooing and many more peculiar incidents.

Nayantara Ghosh Indian Writer, Poet, Tennis Player, wrote Ayame's Parallel Universe, a story about a Japanese high school student, Ayame Takahashi, who awoke in a parallel universe.The following is a list of fiction employing parallel universes or alternate realities. You can help by adding missing items with reliable sources. This is a dynamic list and may never be able to satisfy particular standards for completeness.
