The Big Event Bonus is a randomly triggered bonus. When triggered, the Big Event Bonus is announced on the screen of every eligible player. The player looks up at the big screen to see which of the six Big Event Bonuses is awarded: Mr. Monopoly's Prize, Free Parking, Chance, Community Chest, Railroad Riches or Once Around.

The Once Around Bonus is the largest and most rewarding of all the bonus rounds. In this bonus, Mr. Monopoly keeps rolling the dice until all players move once around the MONOPOLY board, starting at GO. Credits are awarded each time the player lands on a property. Additional bonus rounds are triggered if a player lands on Electric Company, Water Works, Chance, Community Chest, Free Parking or any of the Railroads. The bonus ends after landing on or passing GO.