A 2 vs 2 skirmish or multiplayer map where one team rules over the coast and the river with huge meadows, but no stone ore iron. The other team rules over the mountainside. They can defend more easily, but won't have much space for farms or orchards. The direct access to stone will push their defence, but they have lesser space for buldings.
There are 4 estates at the mountains which produce some iron and stone and 6 at the river which produce bread, meat and beer.
Twisters may occure in the desert.