Twilight Struggle
"Twilight Struggle" was the highest-ranked game on BoardGameGeek from December 2010 to January 2016. As of August 2018, the board game occupies a fifth spot. Being released in 2005 it is the oldest board game in the overall top 10 ranking.
Blue and Gray (board game)
Blue and Gray is a strategy board game for two players invented by Henry Busch and Arthur Jaeger in 1903. They obtained a patent for the game, but may never have published it. Blue and Gray was featured in the book "A Gamut of Games" (1969) by Sid Sackson. It was also featured in "The Book of Classic Board Games" (1991) by Klutz Press under the name Cats and Dogs. In this book, the game was ranked among the top 15 board games of all time, including checkers, backgammon, Go, and mancala. The game is also known as Wild West, Thumps Game, and Captain and Soldiers. The name Blue and Gray "refers to the uniforms of the South and the North in the Civil War and in the original game the playing pieces of the contestants were of those colors."