i finally beat it after all these years, the way i use is to send all the army to the left, one pupkin tree, two of the cactus and archer tree, and not using the lng rnge flower, but the heal one in two sides, research first mana, and speed or force, then the shell, and heal when things start to go uncontrolable, generally is when the factory research the plane
when you unlock all the units and half of spells the game becomes too much easy, and when you have the half of Japan it's a little boring, sinse you only have to conquer and all prefectures are very very weaker, it's a good game, if only they could do the second part, or make more of the same concept with other coutries, or make the units more japanese
 "Imperium I.V"){kind=icon}
 "Tree Troopers"){kind=icon}
 "The Great War of Prefectures"){kind=icon}
 "The Eternal Battle"){kind=icon}