Nearly everyone who grew up during a certain part of the late 20th century is familiar with Bingo. The game, which first came to the U.S. in the 1930s, started with paper cards sporting 24 numbered squares arranged in five rows and five columns — plus that enticing “free space” in the middle which seems to promise a short cut to riches! Bingo’s making a comeback today thanks to Bingo games on mobile devices. National Bingo Day, on June 27, celebrates America’s love of Bingo.