Cannot Play Monopoly
This is the most unusual rule on our list! Inside the Royal house, it is prohibited to play Monopoly. The reason? The Duke of York in 2008 defined it as a “vicious” pastime, inviting the Queen’s subordinates to refrain from such playful activity.
This may seem weird, but if you’ve ever played a game of Monopoly with family, then you know just how vicious it can get. It’s a fun game, but it also has the power to break familial bonds!