Files with gm1 file extension are related to the Stronghold and Stronghold HD video games.

There are 3 other file types using
the GM1 file extension!

empty icon.gm1 - Heroes of Might & Magic 3 saved game

empty icon.gm1 - S.A.P.S. data

empty icon.gm1 - Gerber mechanical 1 (board outline) data

Detailed description

Software that open gm1 file

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GM1 file extension - Stronghold object

What is gm1 file? How to open gm1 files?

File type specification:

Game file type icon Game file type

The gm1 file extension is associated with the Stronghold, a real-time strategic video game and its rework called Stronghold HD, developed by Firefly Studios.

The gm1 file stores game object from Stronghold.

Default gm1 files location:

\SteamLibrary\steamapps\common\Stronghold\gm\anim_dancing_bear.gm1

The default software associated to open gm1 file:

Stronghold HD icon

Firefly Studios Ltd. logoStronghold HD  Microsoft Windows software

Company or developer:
Firefly Studios Ltd.

Stronghold HD is enhanced version of building simulation and a real-time strategy computer game called Stronghold released in 2001. The goal of this game is to create a stable economy and a strong military to defend against invaders, destroy enemy castles and accomplish the mission objectives.

Stronghold icon

Firefly Studios Ltd. logoStronghold  Microsoft Windows software

Company or developer:
Firefly Studios Ltd.

Stronghold is real time strategic and building simulation video game. Player takes role of a lord in Medieval Britain. The goal is to create a stable economy and a strong military to defend against invaders, destroy enemy castles and accomplish the mission objectives.

Help how to open:

This file type is not meant to be opened directly, there is no software that could open and work with it directly, or there is no information available in public sources about opening this file type. This is usually the case of some internal data files, caches, temporary files etc.

How to convert:

As far as we know, this .gm1 file type can't be converted to any other file format. This is usually the case of system, configuration, temporary, or data files containing data exclusive to only one software and used for its own purposes. Also some proprietary or closed file formats cannot be converted to more common file types in order to protect the intellectual property of the developer, which is for example the case of some DRM-protected multimedia files.

List of recommended software applications associated to the .gm1 file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open gm1 file, edit gm1 file, convert gm1 file, view gm1 file, play gm1 file etc. (if exist software for corresponding action in File-Extensions.org's database).

Unspecified and all other actions for computer programs working with gm1 file - Stronghold object

Click on the software link for more information about Stronghold HD. Stronghold HD uses gm1 file type for its internal purposes and/or also by different way than common edit or open file actions (eg. to install/execute/support an application itself, to store application or user data, configure program etc.).

Microsoft Windows:

Main software associated with gm1 file by default:
Stronghold HD small icon Stronghold HD
Stronghold small icon Stronghold

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