The Showa era (1926 - 1989), a period in Japanese history which saw the rise of militarism and imperialism with invasion into surrounding Asian territories. After the nation's defeat in WW2, US occupation caused for massive social/political/military reform and steered Japan into its current state.

My list on Taisho era games: https://www.backloggd.com/u/Ophelia/list/taisho-japan-games-1912---1926/
My list on Meiji era games: https://www.backloggd.com/u/Ophelia/list/meiji-japan-games-1868---1912/
My list on Bakumatsu era games: https://www.backloggd.com/u/Ophelia/list/bakumatsu-japan-games-1853---1868/
My list on Heian period games: https://www.backloggd.com/u/Ophelia/list/heian-japan-games-794---1185/
My list on Kamakura period games: https://www.backloggd.com/u/Ophelia/list/kamakura-japan-games-1185---1333/