I believe this hasn't been posted anywhere yet, so here is a list of Antiquity narrative events that offer a codex as a possible reward. I datamined them from the XML files, then verified in game.
General
"A Story to Tell": Unlocked after 4th narrative event.
"Outdoor Events": Unlocked by placing a specialist on an amphitheater.
"The Tech Wrangler": Unlocked after 4th tech mastery.
"Plates of Brass": Unlocked after dispersing 3 independent powers and having built a barracks. Can provide one codex at the cost of -1 happiness on barracks.
Civ-specific (only base game, haven't checked the DLC Civs)
The Maya ("The Bark-Paper Book") and the Mississippian ("The Dream Visitor") get an event rewarding a codex when researching Writing II, in addition to the normal codex awarded for that mastery.
"Waste Not": Requires Han, unlocked with having 2 libraries before turn 50 (standard speed).
"A Song for the People": Requires Han, unlocked with an amphitheater adjacent to palace and villa.
"The Golden Path": Requires Aksum, unlocked after 2nd trade route.
"Frankincense and Myrrh": Requires Egypt, unlocked after constructing a monument and an altar.
"The Immortal": Requires Persia, unlocked after killing 5 enemy units with immortals.
"Ghost Writer": Requires Rome, unlocked after dispersing 2 independent powers after having researched the literacy civic.
There are also two Greece quests around Great People that I couldn't trigger in my test play:
"A Balm to the Sole" and "In the Study of Beasts": Unlocked with Logios Aristotle, requires 3 of Camels, Wool, Horses, Hides.
"Learning from Experience": Based on the data files, it's unlocked if Logios Xenophon was activated and if DIPLOMACY_ACTION_FREE_CAPTURED_COMMANDER was started (not sure what that last action means, is it something that was removed from the final game?)
It looks like 8/10 Antiquity Civs have specific quests around codices, with the Maurya and Khmer left out unless I missed something in the files.
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Note that 2 of the 10 possible Han Great People also provide codices. (Egypt and Greece each have 1/10 Great People providing a codex.) The Han thus have a remarkably "cheap" option to complete the Great Library path, with 10 codices obtainable without researching beyond Engineering in the tech tree:
- Complete the 5 narrative events above.
- Get a codex from a scientific city-state.
- Get a codex from a Shi Dafu.
- Get the 3 cheap tech masteries awarding codices (Writing, Wheel, Currency).
General
"A Story to Tell": Unlocked after 4th narrative event.
"Outdoor Events": Unlocked by placing a specialist on an amphitheater.
"The Tech Wrangler": Unlocked after 4th tech mastery.
"Plates of Brass": Unlocked after dispersing 3 independent powers and having built a barracks. Can provide one codex at the cost of -1 happiness on barracks.
Civ-specific (only base game, haven't checked the DLC Civs)
The Maya ("The Bark-Paper Book") and the Mississippian ("The Dream Visitor") get an event rewarding a codex when researching Writing II, in addition to the normal codex awarded for that mastery.
"Waste Not": Requires Han, unlocked with having 2 libraries before turn 50 (standard speed).
"A Song for the People": Requires Han, unlocked with an amphitheater adjacent to palace and villa.
"The Golden Path": Requires Aksum, unlocked after 2nd trade route.
"Frankincense and Myrrh": Requires Egypt, unlocked after constructing a monument and an altar.
"The Immortal": Requires Persia, unlocked after killing 5 enemy units with immortals.
"Ghost Writer": Requires Rome, unlocked after dispersing 2 independent powers after having researched the literacy civic.
There are also two Greece quests around Great People that I couldn't trigger in my test play:
"A Balm to the Sole" and "In the Study of Beasts": Unlocked with Logios Aristotle, requires 3 of Camels, Wool, Horses, Hides.
"Learning from Experience": Based on the data files, it's unlocked if Logios Xenophon was activated and if DIPLOMACY_ACTION_FREE_CAPTURED_COMMANDER was started (not sure what that last action means, is it something that was removed from the final game?)
It looks like 8/10 Antiquity Civs have specific quests around codices, with the Maurya and Khmer left out unless I missed something in the files.
--
Note that 2 of the 10 possible Han Great People also provide codices. (Egypt and Greece each have 1/10 Great People providing a codex.) The Han thus have a remarkably "cheap" option to complete the Great Library path, with 10 codices obtainable without researching beyond Engineering in the tech tree:
- Complete the 5 narrative events above.
- Get a codex from a scientific city-state.
- Get a codex from a Shi Dafu.
- Get the 3 cheap tech masteries awarding codices (Writing, Wheel, Currency).
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