Thank you for playing my game. So ecstatic to know my game met a geography nerd! The flat world map DOES WRAP around at the east and west edges. If you go off the map at the east edge, you will find yourself coming out of the west edge; and vice versa.
I have watched that youtube video as a reference, as I have been making a 3d globe. It was only halfway through the jam that I changed to a 2d flat map, because I found it easier to play--you can see everything basically from anywhere on a familiar map; a better choice for a jam game.
Thanks again for checking out my game!