||This is an overview article, listing content appearing across multiple games.
Test cells are locations within the files of a game and are inaccessible during normal gameplay.
They are used by developers to test the functionality of various aspects of gameplay, including vendors, chests, traps, textures, and quests.
Test cells are found in Fallout 3, Fallout: New Vegas, Fallout 4 as well as their respective add-ons. Test cells are also within the game files of Fallout 76.
An example of a test cell in Fallout 3
used to test traps