The new rule that the first civ to research Philosophy gets a free tech opens the way to a gamble that, if successful, can be highly advantageous and even a bit unbalancing. In my first two C3C games, both playing the Mayas and restarting to get a river start (I absolutely adore the Agricultural/Industrious combo on a river), I was able to research Alphabet, Writing, and Code of Laws and still beat the AIs to Philosophy. (In my first, I even detoured through Literature before Code of Laws thanks to forgetting about the Philosophy change.) That let me get Republic as my free tech. In my current game, I'm starting a switch to Republic in 1450 BC, which is just a bit absurd.
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