GB1 Converter

Extract text from GameMaker backup files (GB1)


Drop or upload your .GB1 file
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How to extract text from your GB1 file

  1. Click the "Select File" button above, and choose your GB1 file.
  2. You’ll see a preview, if available.
  3. Click the "Convert file to..." button to extract text information.

Convert GB1 to another file type

To convert GB1 Game backups to another format, you need GameMaker or other Game software.

Convert a file to GB1

To convert other file formats to the "Compiled Game Data" file type, you need software like GameMaker or a similar tool.


About GB1 files

The .GB1 file extension is primarily associated with GameMaker, serving as a compiled game file or an internal backup generated by the engine. In legacy contexts, it is also known as a Game Builder 1 game file. These files store the game logic, scripts, sprites, and sounds in a packaged binary format. Users typically encounter severe limitations with .GB1 files because they are proprietary, closed-source containers. The main disadvantage of this format is its compiled nature: once a game is packed into a .GB1, the underlying source code and raw assets like PNG graphics or WAV audio tracks are stripped of their original file structure and locked away. This makes editing, modding, or recovering lost project files incredibly frustrating without specialized decompilers. Furthermore, they are completely unsupported by standard web browsers and traditional file viewers. Usually, users want to convert .GB1 files back into readable project files (like .YYP or GMX) or extract the internal media into a standard ZIP archive. Unfortunately, because this is a closed, proprietary format heavily dependent on the engine's specific runtime environment, standard online converters completely fail to process it. Often, only the original GameMaker software or dedicated community extraction tools can properly read or export the data. If our analysis detects a supported underlying or embedded format, viewing or conversion may still be possible.

Convert.Guru analyzes your GB1 file, detects the exact format, and lets you read the text inside.

Users also converted GMR, GM6 and GM1 files.


FAQ

If you want to convert GB1 file to BAK, BACKUP, OLD, TMP, TEMP, ARC, ZIP, TAR, GZ, 7Z, RAR or ISO, you can use GameMaker or similar software from the "Compiled Game File Storage" category. In the File menu, look for Save As… or Export….

To convert SNAPSHOT, OLD, IMG, RESTORE, ISO, COPY, VMDK, TMP, VHD, BAK, ARCHIVE or BACKUP files to GB1, try GameMaker or another comparable tool in the "Compiled Game File Storage" category.



The GB1 Converter Story

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 GB1 converter.