@razgriz@hexbear.net I hope you get a kick out of this!

This has good potential for a sort of Post-Posadist solarpunk world. Some pockets of techno-magicks in the protected deep valleys that are reticent to share their knowledge with the survivors in the open and scarred lands beyond the mountains. There could be some mutant factions among the mildly radioactive archipelagos.

Middle Earth, home, least it was before I fucked everything up.

All the circular features and the light blue but with trailing land is real consistent with volcanic atol formations. Couple that with some notable ridgelines in the middle of the islands and you can do some banger biodiversity a la Hawai'i.

Sporadic lore/myth idea for that middle island between the two big ones: The two islands used to be connected by a narrow land bridge until two rival kingdoms got in a war. The battle there was poised to be the deciding one and both kings planned to burn the other's kingdom and take everything they could. Angered at the bitter fued and careless plans between the greedy kings, a god destroyed both of the armies as they fought and all the land underneath with a terrible force of nature, killing the kings and their armies and preventing the burning of cities and farms that would turn into an eternal fued. All that's left is a giant crater and the land that's no longer connected. (Maybe, in reality, it's a legend perseving the memory of a real explosive erruption ((which would be exceptional on a volcanic island like this that usually has slow erruptions)) and a time of political turmoil. Maybe there really is a god there based on the setting.)

Anyways, this is cool I love worldbuilding like this thank you for sharing : )

If you rotate it counterclockwise 90 degress, it actually looks like Tellius from Fire Emblem Path of Radiance/Radiant Dawn.

I see this as a single big continent, with the eastern part being a snowy, desolate tundra

is this that thing the other person had on their chair

Curveball idea: maybe the dark blue is ocean, and the light blue is ice! This could be volcanic islands in an extreme latitude, the light blue is shallower/slower moving water that freezes over during the dark part of the year (unless there's volcanic activity)