What is a .FGD file?
The file extension .FGD stands for Forge Game Data File. This type of file is primarily used by a program called Hammer Editor, which is part of the Source SDK, a toolkit used for developing map files for games created by Valve Corporation. The .FGD file contains definitions of all the entities (objects, characters, triggers, etc.) that can be used in a game. This is important because it allows people who are modifying the game to know what entities they can work with when they create custom modifications or new game levels.
To open an .FGD file, you would typically use the Valve Source SDK, specifically the Hammer Editor component. This tool helps game developers and modders to design and build levels for Valve games.
.FGD files are commonly associated with popular Valve games like Half-Life, Counter-Strike, and Team Fortress Classic. The name "FGD" comes from an earlier name for the Hammer Editor, which was originally called "The Forge." This historical name influenced the naming of the .FGD files.
In summary, if you are looking to modify or create levels for Valve games, you would use the Hammer Editor within the Source SDK to open and work with .FGD files. These files provide essential information about the game's entities that are necessary for game development and modification.
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