Go to "Others (So no Ta)" during your turn and select "Goals (Mokuhyou Kingaku)". Hold L and press R at the goals screen. The lettering will turn from white to yellow to confirm correct code entry. When this code is active, even if you land on the bank castle with the goal amount, you may not win. If there is another player that has more than you (the goal amount and more), they will win.
Complete the first tournament tounlock the two Extra Rules in the trade shop for purchase for 50 gold coins each. With "Empty Lots ", you can set the number of free lots on the map in Free Play mode. With "Quick Game", everyone begins the game with half the required gold for winning the stage.