I propose you my first map (Flame is really good !), it's a realistic map, not symetric.
It's for 4 players and their is a lot of scavengers to defend their cities. Their is lot of trees, a little river, and some cliff with gateway.
It's a 250 by 250 map, I think it's fun versus IA :

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I don't know how add this at your forum..
The map :


