Stronghold animated data
File type: Game file
A .tgx file contains game data used by the Stronghold real-time strategy game series.
It is an internal game resource rather than a general-purpose media file.
File type category:
Game file
Date updated: October 9, 2026
The tgx file extension is associated with Stronghold, a real-time strategy and economic simulation game developed for Microsoft Windows by Firefly Studios.
Tgx files store game data used by the game. The format is used to compress non-animated images and is part of the game's installed resources.
The format is used by Stronghold and related Windows releases, including Stronghold Crusader, Stronghold 2 and Stronghold HD. Stronghold HD is an updated version of the original game and is available through Steam.
The format is intended for the games themselves and is not generally used as a standalone format outside the Stronghold series.
You normally cannot open a .tgx file manually. The associated Stronghold game reads it from its installation or resource folders when the game runs.
On Microsoft Windows, keep the file in its original game folder and use the relevant version of Stronghold, Stronghold Crusader, Stronghold 2 or Stronghold HD. General image or media applications are not expected to open it.
A .tgx file cannot be meaningfully converted with standard media-conversion software. It is a game-specific resource used by Stronghold.
To preserve compatibility, leave the file in its original format and use the associated game to display the data.
Software applications that handle other tasks involving tgx files:
Microsoft Windows
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