.SGM File Extension

File written in the Standard Generalized Markup Language, a document generation language used as a standard means of sharing information digitally; includes custom tags that describe the structure and content of information included in the document; often references a Document Type Definition (.DTD) file, which defines the objects that can be included in the SGML file.

May also use the .SGML extension.

Saved state file created by VisualBoyAdvance, a Game Boy emulator; contains a snapshot of the game state, which can be saved at any time during gameplay; used for saving and loading in-game progress.

In VisualBoyAdvance, SGM files can occupy one of ten save slots per game. The files are named using the ROM filename prefix and the number of the save slot. For example, the .GBA ROM MyGame.gba could have save slot 1 created with the filename MyGame1.sgm.