A planeverse is a universe that is crushed into a 2-Dimensional Space. All objects in a planeverse exist in only two spacial dimensions (and usually one or more temporal dimensions as well). Life might be possible in a planeverse, but not according to Earth's biological principles; an organism in a planeverse would have a digestive tract that cut it in half, most likely killing it or otherwise rendering it unable to live very well.
The most classic example of a planeverse is Edwin A. Abbott's Flatland, a book about a square in a two-dimensional world of polygons and lines who is visited by a three-dimensional sphere and taught about how higher dimensions work.
- ↑ Abbott, Edwin A. (1884). Flatland: A Romance in Many Dimensions.