SimEarth, a game I wasted many hours on in my youth. A part of me feels this easily could have been a scenario that a player could experiment with during the game.
Granted the map is not without its issues. For example, Greenland should be more of an archipelago if it was missing its ice sheet. Nevertheless, it is still a cool thought experiment. I know some might want to speculate about human civilization in a world like this, but personally I doubt humanity as we know it would evolve on such a planet. That is the problem with geological what ifs: you could easily wipe out of all humanity with them.
Honorable mentions this week goes out to "Origins of the States of the ASB" by Ben "False Dmitri" Carnehl. If you want more mappy goodness, check out Brillant Maps' article on an earlier proposal of the partition of India and Pakistan.
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Matt Mitrovich is the founder and editor of Alternate History Weekly Update, a blogger on Amazing Stories and a Sidewise Awards for Alternate History judge. When not writing he works as an attorney, enjoys life with his beautiful wife Alana and prepares for the day when travel between parallel universes becomes a reality. You can follow him on Facebook, Twitter and YouTube. Learn how you can support his alternate history projects on Patreon.