A number of stories are unofficial sequels to or imitations of Flatland; others were inspired by it, and still others use this story to explain the concept of dimensions beyond our own.
Comic books
- Hypernaut from 1963 has a Flatland in his space station.
- League of Extraordinary Gentlemen volume 2, issue 3: In chapter 3 of the series of writings New Traveller's Almanac, it is mentioned that in an unknown basement of New York, Flatland was discovered by a mathematician in 1884.
Literature
- Animorphs: Elfangor explains the abilities of the Ellimist by telling Loren to imagine that they were Flatties, lived on a sheet of paper, and could be imprisoned by the three-dimensional Ellimist drawing a square around them... or freed by being plucked up off the paper. Well, they are Cubies.
- Briefly mentioned in C. S. Lewis's Mere Christianity, on the Trinity: human beings can no more grok the idea of a being with multiple persons than a Flatlander could grok the idea of a cube being composed of multiple squares.
- At one point during their interdimensional travels in A Wrinkle in Time, the protagonists are accidentally transported to Flatland, where they almost suffocate.
Live action TV
- The Big Bang Theory: In Psychic Vortex, when Raj Koothrappali wants to go outside with him, Sheldon Cooper says he prefers to use his imagination to visit fictional worlds. He mentions Flatland is one of his favorite places and he imagines himself to be a hexagon. In the end Martha tells him Flatland is also a treatise on social issues rather than just being a math essay.
- Doctor Who: Flatline deals mostly with 2D aliens from another plane of reality , and the 12th Doctor even makes a subtle reference to Flatland when he starts musing about how a universe of only two dimensions has been theorized about for a long time.
- Carl Sagan laid it out in the Cosmos episode, Edge Of Forever.
- The Outer Limits (1963) has the episode, Behold, Eck with an alien freely inspired by Flatland.
Tabletop games
- The Original Flatland Role Playing Game
by Marcus L Rowland. "Action and adventure in a world where characters are supposed to be two-dimensional!"
Toys
- Flatland and its inhabitants end up as the MacGuffin of the backstory for Transformers Alternity which, itself, deals extensively with the concepts of pan-dimensional transcendence.
Video games
- Gravity Falls: PinesQuest 2Dimensions: The mysterious note items obtained by defeating bosses contain excerpts from Flatland.
- Super Paper Mario: One of the worlds is called "Lineland".
Webcomics
- xkcd: There is one comic strip where Rob apologies to A. Square for making fun of him not understanding the 3rd dimension.
Web originals
- SCP Foundation: SCP-3966 are the webs of hyperdimensional spiders that resemble proteins found in the human nervous system. The spiders make these webs as an attempt to harvest the nerve cells of sleeping humans. Flatland is mentioned by CArgent as a means of explaining how we would perceive a 4D entity.
Western animation
- Futurama: In 2D Blacktop, Philip Fry, Hubert Farnsworth and Turanga Leela accidentally squash themselves into the 2nd dimension, Leela exclaims it is like Flatland.
- When Bill Cipher from Gravity Falls was asked on his Character Blog from Reddit what he believed spawned his existence, he said "EDWIN ABBOTT ABBOTT HAD A DECENT IDEA". In the Series Finale, Weirdmageddon Part 3: Take Back The Falls he reveals that he is from the 2nd dimension, and it is all but stated that his motivation for becoming a multiverse-hopping "dream demon" is him basically taking the Gospel Of Three Dimensions to an (il)logical extreme.
