Extract text from Game music or map files (GBM)
To convert GBM Game files to another format, you need Dungeon Fighter Online or other Audio software.
To convert other file formats to the "Game Background Music" file type, you need software like Dungeon Fighter Online or a similar tool.
The .GBM file format typically serves as a game background music file, most prominently used in the multiplayer action RPG Dungeon Fighter Online. Despite the unique extension, these files are generally standard Ogg Vorbis audio streams simply renamed to .GBM to integrate with the game engine and discourage direct tampering. A secondary use for the .GBM extension is the Gameboy Map File, a retro development format created by Harry Mulder for building tile-based maps in Gameboy homebrew games.
The primary disadvantage of the .GBM format is its lack of native recognition by consumer operating systems and media players. If you double-click a .GBM audio file, your computer will not know how to open it, even though the internal audio data is standard Ogg Vorbis. Gameboy map files face an even stricter limitation: they are deeply proprietary and require niche, legacy development software from the late 1990s to open.
If dealing with the audio variant, the best target formats for conversion are MP3 for broad hardware compatibility or WAV for uncompressed archiving. You can often bypass conversion entirely by renaming the file extension to OGG. For map files, extracting the raw hexadecimal tile data or converting it into a PNG image or CSV array is usually necessary for modern game engines.
Standard online converters fail to process .GBM files because they rely strictly on the file extension and do not inspect the file headers. This makes the format difficult to handle directly. Our tool inspects the internal file structure, meaning if our analysis detects the embedded Ogg Vorbis stream or map data, viewing and extraction may still be possible.
Convert.Guru analyzes your GBM file, detects the exact format, and lets you read the text inside.
If you want to convert GBM file to EXE, ISO, BIN, CUE, PAK, WAD, PK3, PK4, BSP, MAP, SAV or DAT, you can use Dungeon Fighter Online or similar software from the "Game Audio & Map Data" category. In the File menu, look for Save As… or Export….
To convert MOD, BIN, CFG, SCX, DAT, MPQ, LOG, CUE, INI, EXE, SCM or ISO files to GBM, try Dungeon Fighter Online or another comparable tool in the "Game Audio & Map Data" category.
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our GBM converter.