I have a hobby I don't talk about much – because it is not something most people can understand, and I don't always want to try to explain it. It does not even have a single term that describes it, but probably the most commonly used these days is "conworlding". This is derived from the noun "conworld" which is a contraction of "constructed world".
I have been doing it since childhood, when I called it "drawing maps", because that is how it started: drawing maps of imaginary countries. But by my teenage years it had become "writing encyclopedia articles about imaginary places." Mostly, I would fill notebooks with this material, as I was never satisfied (or expert enough) with the graphics software available for drawing maps, so I always drew the maps by hand.
This type of activity has a respectable side: JRR Tolkien apparently drew his maps and wrote his appendices for Middle Earth long before he wrote his novels. He also took very seriously the related pasttime of "conlanging" (inventing imaginary languages – not that he called it that, as the term came later). His complex Elvish and other languages are serious philological works. More recently, serious "professional" conlangers have even been able to make money: the guy who invented the Klingon language for Star Trek got paid something, and there's someone who works full time as a conlanger for the Game of Thrones TV show. I was always too perfectionistic, due to my linguistics background, to go very far with conlanging. Arguably, the the same thing that challenges me in learning Korean is what prevents me from being a serious conlanger. Setting that aside, however, I love to make maps and craft the fictional geographical data that accompanies them.
I remember when the wikipedia first appeared, I thought, "there should be a wikipedia for fictional places." Actually, this was an echo, updated for the internet age, of the themes in Borges' famous story "Tlön, Uqbar, Orbis Tertius." I was so enamored of this idea that about a decade ago, I tried to use my database programming expertise to build a fictional online encyclopedia for myself, but that project lost momentum at some point.
Well, it turns out some guy in Germany has done it. Further, there is a google-earth-quality online mapping tool for it. Actually, the mapping tool was the thing created first, and I found it about 6 months ago – the wiki came just in the last few months. There are people who are much more serious about it than I am, creating fictional countries, with supporting encyclopedic articles, that are difficult to distinguish from reality. Tlön, indeed.
The collaborative aspect is what is genuinely new, and it changes things some. It is interesting to see what other people do. So I have been spending some time there – mostly crafting maps for my allotments (one can sign up for free, and receive a "country" by request – a terra incognita to do with what one wishes), but also writing some wiki entries for them. It has the same appeal to me of sim games like simcity or civilization, which I have spent plenty of time addicted to, but it is better: there are fewer rules, and the result is always cummulative and feels more creative.
I have attempted to attach a screenshot of a map of the downtown of the city state of Khaiwoon, a vaguely Singaporean nation created by one of the most prolific and talented conworlders. The site is called Opengeofiction – here is a link to his article about Khaiwoon. There are links from there to the mapping tool.
I will leave as an exercise for curious readers to find which countries are "mine".
[daily log: walking, 1 km]