HOI2 Titles on Sale Steam Autumn Sale for 1 week

HOI2 Complete 65% off (Includes: Hearts of Iron II, Expansion Doomsday, and Expansion Armageddon)

https://store.steampowered.com/app/22130/Hearts_of_Iron_2_Complete/

Arsenal of Democracy 65% off

https://store.steampowered.com/app/42850/Arsenal_of_Democracy_A_Hearts_of_Iron_Game/

Darkest Hour 65% off

https://store.steampowered.com/app/73170/Darkest_Hour_A_Hearts_of_Iron_Game/