Garry's Mod Addon
Unknowngame
file format for downloadable game content from Garry's Mod
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| Extensions | .gma |
|---|---|
| MIME types | application/octet-stream |
| Signatures | 474d4144 at byte 0 |
| Wikidata | Q28757834 |
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From Just Solve the File Format Problem (File Formats Wiki), Wikidata. Updated 2026-10-24.