In Monopoly, if a player lands on an unowned property and chooses not to buy it, the official rules mandate that the property must be auctioned to all players. This often-overlooked rule accelerates the game and introduces strategic bidding opportunities.

Implementing the auction rule can reduce the game's length from several hours to approximately 60–90 minutes, as properties are acquired more swiftly, preventing prolonged sessions where players repeatedly land on unowned spaces without transactions.

Many players are unaware that the 'Free Parking' space is intended to be a neutral resting spot with no monetary rewards, contrary to popular house rules that add cash bonuses.