Although I was playing as Spain, in my first Eu4 game Europe was a mess and not due to me (since I didn't even know how to play). For example, the Livonian Order took half of Russia, the Commonwealth conquered Central Asia (so it had a direct border with Ming) and Constantinople, Venice ate Austria and North Italy, Ulm took South Germany, Hesse took like 3/4 of modern Germany and France the Southern half of England.