map 848618 is well balanced for normal difficulty:
violet has lots of city to conquer but it's force will be spread very thinly
red can conquer the northern cities
blue can compete with red and may conquer green
green has to conquer blue quickly if want to win
After days of playing, I has managed to keep the England map from being nuked in normal mode, and all the zombies was killed. I wish that the game register it was a game over so I can get a highscore.
You should add a thing that can hold materials until met requirement(by player decision) and then it will release the materials(still hold the same order of the materials goes in)
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