Alcovia is my go-to imagi-nation for most games these days. Orignally created as an analog for small Balkan nation to be used for colonial era wargaming and VSF, it later evolved into other eras as needs dictated. As Alcovia grew from the 19th century into the early 20th century it gained legs as an inter-war locale for Back of Beyond style gaming and as it did, it gained other imagi-nation neighbors such as Elistonia, Iqenistan, and Theogonia.
Then I started the Crisis in Alcovia project which was the first dedicated blog for Alcovia, chronicling the outbreak of a modern 21st century civil war. This blog is mostly made up of fictional news stories, interviews and media commentary about the goings on during the civil war. I used a lot of pictures of real world conflicts to make the events seem more "realistic".
Most recently Alcovia has been used as the setting for 18th century wargaming during the War of Alcovian Unification? This is a period in which a single Alcovian warlord set his sights on bringing the rough and wild Alcovian Steppes under a single crown as a "modern" nation. You can read about the build-up of this side project on The Dream of the Sleeping Wolf blog.
I'm sure Alcovia will see other incarnations, but I plan to slow down on new iterations of the fictional nation until I've fleshed out the few I already have.