Shell

A shell building is a buydebug object, that serves as a large fixed-exterior that acts as shelter. In practice, they're used to give a complex yet aesthetical architecture look, that would otherwise be impossible to create. Because of their varying size, some come with a fixed height and are useful for alluding persistent size that is the interior. 
Anything that's within a shell (an object, wall segment and flooring) can only be modified with RestrictBuildBuyInBuildings cheat enabled.Making any alteration in it (i.e placing an object in it) will render the hand tool useless for picking up the building.Therefor, the only possible way of deleting is through testingcheats on and by shift-clicking on it However, creating a smaller interior and utilizing hidden room markers for outer halls is completely optional. All shell buildings are fixed with their own entrance doors.
Examples of these buildings include the pyramids and the dragon cave exterior in The Sims 3: World Adventures, penthouses and apartments in The Sims 3: Late Night and The Sims 4: City Living respectively, private and big show venues in The Sims 3: Showtime, and futuristic shells in The Sims 3: Into the Future. The Sims Mobile introduces various shell buildings for careers.
==The Sims 3: World Adventures==
Location 	Shell's name 	Image	Size 	Available in buydebug	Notes
Abu Simbel (The Southern Beach) 	Abu Simbel 	 	46x34 	Yes 	Entrance shell with no back wall.
The Great Pyramid (Al Simhara Desert) 	Pyramid - Large	 	128x128 	Yes 	Requires moveObjects on to place down.
• Pyramid of the Burning Sands (Al Simhara Desert)• Pyramid of the Wind (Al Simhara Desert)• Pyramid of the Sky (Sky Valley)	Pyramid - Small	 	80x80 	Yes 	Requires moveObjects on to place down.
The Great Sphinx (The Crossroads) 	The Sphinx 	 	75x27 	Yes 	
The Dragon's Maw (10 West Dragon Hills, Shang Simla) 	Dragon Cave 	 	55x29 (1st floor)	Yes 	Entrance shell with no back wall. The non-solid roofing is noticeably larger at 61x54.
==The Sims 3: Late Night==
Skyscrapers are shell buildings that were shipped with The Sims 3: Late Night.TheSims3 tweet The tall buildings can actually be lived in. If you make enough Simoleons you can even buy one of the luxury high rises. They are "Shell buildings"TheSims3 tweet - The apartments are extensions of shells from World Adventures. Big models, but with some floors that can be built and lived in. and only offer one or two floors (such as the basement; some nicer penthouses have a second floor bedroom.) as a playable area for either residential penthouses or community lots, such as bars. This is the first time in the series that a skyscraper can be made without the use of cheats, though they were available as neighborhood decorations in The Sims 2: Nightlife and The Sims 2: Apartment Life. Skyscrapers can be placed in build mode, though, as with any rabbit hole, it has to be placed before a family moves in. Although many shells can be obtained from the buydebug catalog, some of them are unroutable due to broken door entrances.https://modthesims.info/showthread.php?t=613589
===Shells===
Location (Bridgeport) 	Image	Size 	Design
The Prosper Room 	 	22x22 (floor)35x27 (foundation)	Has a large yellow billboard on the top of the left wall, toward the front. Has a small red sign toward the bottom on the back wall. Has three more small sign on the back right corner, toward the bottom of the tower. Penthouse had outdoor balcony.
Eugi's 	 	20x20 (floor)22x22 (foundation)	White-color tall, thin tower with floor-to-ceiling windows, giving a more modern feel, with a triple-level, flat-topped roof. Has a green billboard on the left side, and a curved orange sign above the door and on the top of the front.
The Simerset 	 	30x18 (floor)36x24 (foundation)	Short, wide tower. Rather monotone, with the exception of some red canopy roofs over the ground floor windows.
Aquarius 	 	30x18 (floor)36x24 (foundation)	Overall dark tone with a black-color canopy over the front door and "driveway" with black and white canvas roofs over the ground floor windows. The first floor is inside. The other 3 are above, allowing the player to build the upper floors—and roof—as they see fit.
The Tidewater 	 	20x20 (floor)22x22 (foundation)	Has a greenish-color flat roof and decorative front door mantle/frame. The top floor is partially covered by the shell.
Veranda Villas 	 	12x18 (floor)30x30 (foundation)	Rather odd shaped tall tower with a large base for the first two floors, which have a wrap-around deck on the second. Multiple floors have small concrete "balconies". Has a rather industrial-style look.
Bridgeport Armory 	 	18x18 (floor)29x31 (foundation)	Dark brown concrete. Has a large blue billboard with red lettering on the back side. Only shell to have its "penthouse" not on the top floor(s).
Bridgeport Sports Zone	 	30x18 (floor)36x24 (foundation)	Similar to the Aquarius, having canvas roofs over the ground-floor windows with the canopy over the front door. These are of a brown color. Has numerous small signs on the right side.
Plasma 501 	 	22x22 (floor) 	White color tall building with blue canvas roofs over the ground-floor windows. Has two small yellow signs on the front-right corner at ground floor, a small red and white sign on the front-left corner, also at ground floor, and a larger blue and red billboard/sign on the front-right corner at the top of the tower.
The Brightmore 	 	32x20 (floor)36x24 (foundation)	Has a billboard on the roof facing off of the back-left corner, orange canvas roofs over the ground floor windows, and a yellowish billboard of a Sim above the front door.
Some of the lower square buildings have decorative interiors rooms that can be seen through 1F windows, although if they are seen from very specific angles, the interior in question are shown to be fake.
==The Sims 3: Showtime==
Shell buildings are present in the expansion-introduced Starlight Shores world. However, not all of them are available in the build mode section of buydebug. Based of the examinations of modifying few of these buildings, all can possibly hold the maximum of five story height with a flat roof on top.
Location (Starlight Shores)	Lot 	Image	Size 	Available in buydebug	Notes
40 Los Sueños Strip 	Brotherhood of Fine Fellows Hall (Metropolitan Building)	 	53x52 	Yes 	
32 Los Sueños Strip 	Hoi Polloi Event Center 	 	57x58 (Circa)	No 	Includes a theater rabbithole.
37 Los Sueños Strip 	Los Sueños Private Club 	 	45x38 	Yes 	
21 Via Del Sol 	The Binder Clips Center 	 	57x59 	No 	Includes a stadium rabbithole.
==The Sims 3: University Life==
Location (Sims University)	Lot 	Image	Size 	Available in buydebug	Notes
110 Sims University 	Conners Student Union Building	 	24x42 	Yes 	
202 Sims University 	Howard Memorial Library 	 	28x47 (Estimated from appearance)	No 	
==The Sims 3: Into the Future==
Location (Oasis Landing) 	Lot 	Image	Size 	Available in buydebug	Notes
109 Arid Avenue (Crash Site)	Crashed Ship Shell 	 	22x17	Yes 	
361 Proclivity Promenade 	EP-XI Imports Gallery 	 	43x41	Yes 	
304 Emulation Blvd. 	Nuts n' Bolts Bot Emporium	 	36x18	Yes 	
394 Emulation Blvd. 	The Erutuf 	 	40x30	Yes 	
==The Sims 4: City Living==
Skyscraper shell buildings return in The Sims 4: City Living. They are more often seen as high story apartment buildings and usually have one to four apartments in them, though some of the skyscrapers also have a penthouse on top. Some of the buildings are mostly one-story, but there couple that have two stories. These skyscrapers can not be moved, edited or placed into another world by the player and are only found in San Myshuno.
SanMyshunoArtsQuarter.jpg|Apartment buildings in Arts Quarter.
==The Sims Mobile==
The Sims Mobile introduces various shell buildings for careers.
==References==
Category:Architecture
Category:World Adventures
Category:Late Night
Category:Showtime
Category:University Life
Category:Into the Future
Category:City Living