Every map comes in many shapes: the 🎲 "new map shape" button makes another version with the same character. Maps are 68×44 tiles for two kingdoms and 80×60 for three or more, and the game checks that every base can reach every other base and every mine.
Green Valley
Grass, lakes, forests and hills
Winterland
Snow, pine forests and frozen lakes
Wastelands
Cacti, dead trees and few oases
Lakelands
Big lakes, islands and narrow passes
River Valley
A river splits the map, with fords to cross
Deep Forest
Trees everywhere and narrow paths
Highlands
Many big hills, rocks and pines
Weather and night
A full day every 6 minutes of play, with nights lit by the buildings. Green maps get rain and lightning, winter gets snow and blizzards, the wastelands get sandstorms. Weather and night are for looks only and don't change the combat rules.