r/AlternateHistory is a subreddit with 275k members. The community frequently discusses alternate history, what if, world war, cold war, and europe, and the most common flair used is 1900s, post 2000s, 1700-1900s, pre-1700s, and althist help.
The original alternate history subreddit
Popular Topics in r/AlternateHistory
#1
Alternate History
132 posts
#2
What If
74 posts
#3
World War
15 posts
#4
Cold War
12 posts
#5
Europe
12 posts
#6
America
11 posts
#7
World
9 posts
#8
Axis Victory
7 posts
#9
Maps
7 posts
#10
World War Ii
6 posts
Flair Used in r/AlternateHistory
#1
1900s
: "World War III in the 80s"
56 posts
#2
Post 2000s
: "What if Air Canada Flight 759 didn't go around in time?"
25 posts
#3
1700-1900s
: "What if Portuguese America (Brazil) had fractured like Spanish America? - The Portuguese-Speaking South America, 1900"
18 posts
#4
Pre-1700s
: "EUR."
13 posts
#5
Althist Help
: "What would a Hypothetical State in what's is Now Southwest Virginia be called?"
7 posts
#6
Pop culture
: "a thriving layne staley's wikipedia page, 2005"
6 posts
#7
ASB Sundays
: "The untold history of Hitler and Stalin's final duel"
5 posts
#8
Media Discussion
: "An alternate history game where Christianity is a real and absolutely confirmed thing. Learn about both a very unique version of Christianity and Earth that are both similar and vastly different from the ones we know."
4 posts
#9
1940s
: "What if Reinhard Heydrich had been sent to the General Government and Hans Frank to the Protectorate of Bohemia and Moravia?"
2 posts
#10
Pre-WW2
: "What if everything went perfect for the British Empire?"
1 post
Member Growth in r/AlternateHistory
Yearly
+36k members(15.3%)
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Last updated: October 15, 2026