What are the expected play times for the idle levels? Can the people who've beaten each level post how long it took them? I'd like to know if I'm at least finishing them in a reasonable amount of time.

Each one takes me about 5 days. I'm on Breaking Green right now.

Highly recommend upgrading Maximum Idle Time unless you plan on playing a lot.
Also recommend increasing Ore Sell values, super useful to get some progress early on.

Edited 8/5/2020 03:54:21

For me, every level past Huruey up to Drakemor has taken 1-3 days. I think Peloponnesian might take me 4.

Apparently the AP are based on how long the levels are supposed to take, although that's probably not a linear function since the final US level apparently takes a month.

Sengoku, CCC, Geopolitics, Breaking Green ~4d
Far Land ~5d

The official estimates by the AI that wrote the levels:

Tutorial: 			13 minutes
Huruey's Castle: 		17 hours
Floating Rocks: 		1 day 7 hours
War of the Worlds: 		1 day 9 hours
Ursa:Luna: 			1 day 19 hours
Final Earth: 			1 day 19 hours
Drakemor's World: 		2 days 3 hours
Peloponnesian War: 		2 days 6 hours
K-PX: 				3 days 13 hours
The Siege of Feldmere: 		5 days 11 hours
Sengoku: 			8 days 8 hours
Copper Creek Castle: 		8 days 12 hours
Geopolitics: 			8 days 16 hours
Breaking Green: 		10 days
Far Land: 			12 days 22 hours
Reconquest 1065: 		13 days 7 hours
Fort Harbor: 			13 days 13 hours
Europe 1066 AD:			16 days 14 hours
AD 1045: Roads of Silk/Iron: 	20 days 12 hours
Old Town: 			22 days 9 hours
Orbis Veteribus Notus: 		23 days 15 hours
Scandinavia and the Nordic: 	24 days 18 hours
Asia: Population Density: 	26 days 1 hour
Africa: 			26 days 19 hours
Rise and Fall of Roman Empire: 	27 days 7 hours
Australia: 			27 days 18 hours
Netherlands: 			30 days 1 hour
China: 				32 days 8 hours
Afro-Eurasia Gargantuan: 	39 days 12 hours
Triskelion: 			48 days 2 hours
United States: 			53 days 5 hours

Note that these are without the use of AP

This is what I've recorded when focusing on completing bonuses and getting items when required:
IACP = Increased Army Camp Production, JS = Joint Strike
FB = Fog buster, SAC = superchage army camp, FC = Free cache

Level #	Name			Attempt	Session age	Started this level	AP usage	Powers
1	Hurely's Castle		1	11 hours	12 hours		None		<unknown>
1	Hurely's Castle		2	7 hours		7 hours			<unknown>	None
1	Hurely's Castle		3	6 hours		6 hours			<unknown>	None
2	Floating Rocks		1	18 hours	23 hours		IACP 10%	<unknown>
2	Floating Rocks		2	15 hours	22 hours		IACP 70% JS 9%	None
3	War Of The Worlds	1	19 hours	1 day			IACP 20%	<unknown>
4	Ursa:Luna		1	1 day 2 hours	1 day 8 hours		<unknown>	<unknown>
5	<unknown>		1	<unknown>	<unknown>		<unknown>	None
6	Drakemor's World	1	1 day 5 hours	2 days			<unknown>	None
7	Peloponnesian War	1	1 day 10 hours	2 days 4 hours		<unknown>	None
8	K-PX			1	2 days 19 hours	3 days 20 hours		<unknown>	None
9	The Siege of Feldmere	1	<in-progress>	<in-progress>		IACP 70% JS 13%	FB SAC+FC

The game is not interesting enough to justify those play times. Particularly towards the end of maps where there are very few meaningful interactions.

Reconquest over, 3d 7h - 8.7B Armies needed.

there is no info on this? We have to keep track of it ourselves?

Scandinavia completed

Needs 141.9B armies to complete. Took me almost 7 days but I used 4 FBs, a MR, 3 IMs (received ~10B armies for these), bunch of FCs and a few TWs/SACs/SMs.