You will need to win one single player game of Sugoroku. This game is basically Monopoly spliced with Mario Party. You may use any settings to unlock this. The object of the game is to collect the target amount of gold. As you travel around the board, you want to buy property and collect your 3 flags. Once you get your flags, return to your home space and level up. You are then awarded gold based upon your level and the amount of properties you own. Seeing as this is a board game, the results basically comes down to luck.