There are games devoted to this, best known is probably Europa Universalis IV [1] and the corresponding reddit [2] often shows maps in alternate histories, aptly named "map porn".<p>There are challenging achievements in the game, such as:<p>- Become the Emperor of the Holy Roman Empire as Spain.<p>- As Byzantium, restore the old borders (i.e., stop and reverse the Ottoman conquest in the 15th century)<p>- As France, own Vienna, Berlin and Moscow.<p>You can picture the maps that this produces. Also, it's a great way to learn about history.<p>[1] <a href="https://en.wikipedia.org/wiki/Europa_Universalis_IV" rel="nofollow">https://en.wikipedia.org/wiki/Europa_Universalis_IV</a><p>[2] <a href="https://www.reddit.com/r/eu4/" rel="nofollow">https://www.reddit.com/r/eu4/</a>