A way to win on the hardest difficulty is to:
(1) Spend first 3 research points in cows and put all workers on cows. Then get house tech and mysticism.
(2) Continue to grow and get the rest of the technologies in the first age. Try to get the barracks up before the start of the second age.
(3) Once you get in the second age, spend you first research points on fish upgrades and immediately switch all workers to fill the fishermen spots.
(4) Then get polytheism and the house upgrade.
(5) Spend a few more points in oars and just continue to grow, eventually getting the "hammer" technologies and setting workers on the mountains. Try to get as many buildings up as possible before the third age.
(6) When the third age comes, immediately spend a few research points in fishing again and add workers to fill the spots.
(7) At some point, get monotheism and code of laws and continue to invest in fishing.
(8) Get city planning and bronze working.
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