File Extensions
From GMpedia.org Wiki
- Game Maker version 3 saves files as .gmf
- Game Maker versions 4 & 5 save files as .gmd
- Game Maker version 6 saves files as .gm6
- Game Maker version 7 saves files as .gm7. These files are the first to be encrypted.
- Game Maker script files are saved as .gml
See also: File extension

