Be sure you have at least 4,000 yen. Go to the Tomato store in Dobiuta. Then buy either potato chips, chocolate, or caramel so you can do the raffle. Keep on buying and buying until you get the 2nd prize (this takes a lot of patience.) Now that you won the Sega Saturn game, go back home. Go to the TV room (the room across your bedroom.) Open up the doors on the TV stand (you will pick up the Sega Saturn and put it on the TV.) Look at it, then go to the inventory screen (the Y button.) Select your Saturn game, and enjoy!