This one shows a world where the Columbian Exchange of diseases etc. was much less harmful to Native Americans, resulting in an Aztec-dominated New World.
This map is based on a world created by Carlton Bach over at http://alternatehistory.net/discussion
A fantasy alternate history world where Australia ended up farther north and gave rise to a civilization on par with China.
The Catholic Church unites Italy and most of France under its banner, then goes on to colonize the New World.
In this world, vampiric plagues spread from Asia into Europe with the Avars, Huns, and Mongols. Dark gray states are vampiric nations, while pale blue ones are human societies.