magnusviri's suggestions (do a breakdown)

[Zematus]

The biggest practical change I would suggest is to move the UI (views, overlays, messages, etc) to the side like in Google Earth. And to make them modeless so they can be displayed while interacting with the world.

After reaching the max supported date, it should be game over rather then an unhandled exception requiring a restart.

There's something about the game that is alluring but it doesn't quite hit the spot yet. This reminds me a little of Seedship. I think Worlds could be a lot funner if it had influence elements like Seedship's. https://philome.la/johnayliff/seedship/play/index.html

I would love to see different map projections. My favorite is the Cahill–Keyes projection. There's also the awesome Myriahedral projections (mainly the coastline and sea line projections). It would be great if several different world views could be on the screen at the same time, say like 4 globe views showing 4 different sides of the planet.

https://en.wikipedia.org/wiki/Cahill%E2%80%93Keyes_projection

https://www.win.tue.nl/~vanwijk/myriahedral/