Animal Crossing: Wild World features a very minimal plot. The objective of the game is to pay off a debt to Tom Nook, who allows the player to move into a house he owns. If the mortgage is paid off, the player's house will expand until upstairs, left, right, center and back rooms are included. This is slightly different from the Nintendo GameCube version, in which the finished house only consisted of a basement, a main room and an attic. While paying off a debt, the player can do a variety of optional tasks, including interacting with other villagers and filling the catalog of the things you have, like furniture, fish, clothes and stationary.
Animal Crossing: Wild World makes use of several of the Nintendo DS' features, including the touch screen, dual screens and internal clock. The touch screen is used for menu navigation and interacting with the surrounding area, including movement, using tools, talking to other villagers, entering buildings, picking up items, etc. The dual screens are used to display the overworld on the touch screen and the sky on the top screen, which varies depending on the circumstances.
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White Turnips that last forever
On Sundays in the morning, Joan the turnip seller will come to your town. Buy as many White Turnips as possible, preferably in stacks of 99. If the turnips stay in your inventory until the following Sunday, they will rot and die and you will be unable to sell them to Tom Nook. However, if you want your turnips to live forever, there is an easy way to do this. First, go into your house and go next to a table that can have items placed on it. Drop a tool item (fishing rod, shovel, axe, etc.) under you. Go into your inventory and drop the desired amount of turnips. If done correctly, the turnips should land on the table and stay there. Because they are not in your pockets, they will not rot and die. When Tom Nook has good prices for the Stalk Market, collect the turnips from the table and sell them.