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What is a .GMX file?

GMX is a resource file from older versions of GameMaker Studio.

Did you know
  • GMX was the resource format of GameMaker: Studio 1.
  • GameMaker stored each resource in its own XML file with a doubled extension, such as .object.gmx or .sprite.gmx, inside a GameMaker: Studio 1 project.
  • YoYo Games retired the GMX format in GameMaker Studio 2, replacing it with the JSON-based YYP project structure.
What Analyser reads
Identify and read more game and emulator files: Unity asset bundles, Unreal cooked assets, CISO/CHD disc images, FMOD/Wwise sound banks, Spine skeletons and atlases, GameMaker/LDtk/TIC-80 projects, Minecraft Anvil regions, Warcraft III maps, Ren Py and RPG Maker data, extra console ROMs (Atari, PC Engine, Master System/Game Gear, WonderSwan, 3DS homebrew), xdelta/Basis patches and emulator saves and movies.
Depth of analysis
.GMX is an identification-grade format: Analyser recognises it from its bytes and decodes the header metadata it carries, rather than opening it in a full viewer. Formats that do get a full viewer are marked "Full" on the formats page.
Open a .GMX file
Drag a .GMX file onto the Analyser home page (or tap to pick one). It is identified entirely in your browser - nothing is uploaded, there is no account, and it works offline once installed.
Related formats
.Assets · .Bundle · .Resource · .UTOC · .UCAS · .UEXP · .UMD · .CSO · .CHD · .FSB · .Bank · .BNK · .WEM · .Spine · .Skel · .Atlas · .YYP · .YY and more. See all supported file types.