Be responsible for the bankruptcy of another player
Land on every property on the board
Roll three doubles in a row and get sent to jail
Build your first set of hotels.
Own the monopoly on the utilities
Own the monopoly on the transport properties
Own every property, including any ports and utilities, down one whole side of the board
Rolled a double to get out of jail
Build your first set of houses.
Own a monopoly
Form a monopoly as a result of trading
Buy a property