This is the story of a square living on a 2D world and how it becomes aware of the 3D world. Does not sound interesting? well, I think it is.
The book was written in 1884 as a satirical novel on the Victorian stratified society, and an examination of different dimensions. Nowadays is still interesting, at least for the definitions on various dimensions.
If you run into a printed copy buy it! is one of those novels that I would love to have in my shelf. If you are planning to buy any digital version, stop right here! There’s an online version in HTML at the Minnesota Science and technology center. Is not difficult to use Calibre or Online convert to obtain a nice ebook for your reader.