A country starting with an X exists! (ish)
If shutdown took its toll on you and you find yourself playing pen-and-paper games, here's your Categories cheat sheet!
The game of Categories is known as Tutti Frutti in Spanish, Jeu du Baccalauréat in French, and Stadt, Land, Fluss (city, country, river) in Germany, where it originated in the 19th century.
I tried to pick some well-known places for each letter so you get to tick off a lot, but be prepared for some off-the-beaten path entries for those difficult letters :D