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By the way, that river is a visual representation of a moat on the city screen.
In battle, it looks like a middle ground between the moats of Fortress and Conflux.
In beta version 2 (of my mod, where the village will be), it will replace either Castle, or the Barbarian city, or the Necropolis.
(It's clear why the first city will be replaced - it looks like a human city! I don't like Necromancers and Barbarians - it's some kind of concept where, excuse me, a neutral warrior of level 5 was created - a troll!)
In version 2, it will be a separate faction.
Outline of the campaign plot:
Evil Erathian lords have occupied almost all of Deiu, which was previously liberated (in version 1!) from the Necropolis. This land is now occupied by peasants. Also, the elementals have returned once again to save the peasants from the Erathians. One energetic elemental named Jelar found among the elementals of Razhivin - a family of the greatest heroes. They must save the whole world from the oppression of the lords.