Off the top of my head (and if they do actually release in 2021):
BoardgamesMr. President: The American Presidency, 2001-2020
The War: The Pacific, 1941-1945
The Korean War: June 1950 - May 1951, Designer Signature Edition
Carrier Battle: Philippine Sea
War For America: The American Revolution, 1775-1782
Death In The Trenches
Frosthaven
PC GamesHumankind
Horizon 2
Knights of Honor II
Dwarf Fortress (Steam version)
Tabletop RPGDeadlands: The Weird West for Savage Worlds Adventure Edition
King Arthur Pendragon 6E
I'm sure I'm forgetting some stuff.