Shell

Shell buildings is the name given for buildings which have a large exterior, but with a smaller playable interior. Examples of these buildings include the pyramids and the dragon cave exterior in The Sims 3: World Adventures. The penthouses of The Sims 3: Late Night are also shell buildings. Apartments and university buildings are also shell buildings, as the rooms where other Sims reside in can not be seen. In The Sims 3: World Adventures, the rooms in the tombs are pitch black if not explored.