No one knows exactly how much money is bet on the Super Bowl, but it’s a lot — more than $10 billion, according to estimates, much of it illegally. The most common way to bet is through the point spread (Kansas City is a 1 1/2-point favorite, meaning they must win by at least 2 points for bettors backing them to cash in).

From the first Super Bowl to Tom Brady vs. Patrick Mahomes, we take a closer look at the most anticipated contests in the game's history.