so those who know me know i have already achieved 1 billion people. the difference with this game is i'm going for this goal on immortal rather than noble difficulty. as before, game settings are Chinese empire, huge map, tropical, low, big and small, massive continents, islands, islands mixed in, epic speed. i must confess i have very little practice for any difficulty higher than noble. so this will most probably take more than one try. my plan of "attack" is to get civil service then biology as quickly as possible.