"The Sims 3" allows you to create your Sim as well as your world with free-roam gameplay attached. One delightful aspect of playing "The Sims 3" is the ability to make a myriad of different styles of buildings. For instance, you can easily make a fully functional skyscraper, as simple or as intricately designed as you want. Whether you want to turn it into a massive pad for your Sim or transform it into a bumping nightclub, it's possible.
Select the "edit town" mode once you start a new game of "The Sims 3." This prompts you to select a spot on the map for your building selection. You can select small lots and large ones depending on your needs. A skyscraper building is built mostly upward, so you don't need a large lot unless you really want one. Purchase the lot of your choice.
Select the cube wall placement tool. This tool allows you to place a full set of four walls and a floor on your lot. Click and drag over your lot to size it accordingly.
Select the floor tile tool and then choose the type of flooring you want. Select the full flooring icon rather than the single square icon. Click inside the walled square to lay the flooring.
Click the "level up" icon to take you to the second floor. Select the flooring tool again in the same manner as in Step 3 and click on the top tile grid of the walled in area. This creates a tiled roof that will become the floor for the second floor.
Repeat Step 2, placing the four-walled structure directly atop the first floor. Repeat this five more times. (You can have a maximum of seven floors for your "Sims 3" skyscraper.)
Lay the flooring as you did in Steps 3 and 4 for all of the building's levels. Place a roof on top of the building by using the roof icon.