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# A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
3 File Associations

.ESP File Extension

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File TypeFallout 3 Plugin File
DeveloperBethesda Softworks
Popularity
4.3 (3 Votes) Thanks for voting!
Rare Uncommon Average Common Very Common
CategoryGame Files
File Format Description

Plugin file used by the Fallout 3 and Fallout: New Vegas futuristic post-nuclear war role-playing games; contains a plugin that modifies game content; can include game objects, dialogue, gameplay settings, AI settings, world properties, and other content.

ESP files can be used for modifying existing game data or for adding new game data. They can be edited using G.E.C.K. (the Garden of Eden Creation Kit), which is made available by Bethesda Softworks, the developers of the Fallout series.

ESP plugin files are complementary to .ESM master files and will not load without a corresponding ESM file. Additionally, the settings in ESP files override those in ESM files, since the ESP game data is always loaded after the ESM data. Therefore, you can use ESP files to override the default game properties with custom properties.

Program(s) that open .ESP files
Updated 2/16/2011

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File TypeElder Scrolls Plugin File
DeveloperBethesda Softworks
Popularity
3.0 (1 Vote) Thanks for voting!
Rare Uncommon Average Common Very Common
CategoryGame Files
File Format Description

Plugin file used by The Elder Scrolls (TES) first-person RPGs such as Oblivion and Skyrim; similar to an .ESM file but is used specifically for adding plugin features, such as new graphics, weapons, and world content; used for creating custom game alterations.

In order to apply custom game modifications, ESP files interact with ESM (Master) files and override default behaviors and data. While ESP files can be used for plugins, often users will create mods of ESM files and distribute them for custom game alterations without using ESP files.

Program(s) that open .ESP files
Updated 9/30/2013

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File TypeACD/Labs Dataset
DeveloperN/A
Popularity
2.0 (1 Vote) Thanks for voting!
Rare Uncommon Average Common Very Common
CategoryData Files
File Format Description

Contains data generated by Advanced Chemistry Development analysis software.

Program(s) that open .ESP files
Microsoft Windows Logo
Windows
Icon ACD/SpecManager or ACD/Structure Elucidator
Updated 2006