| filename extensions | art-335 |
| unf | |
| TechTarget file types | art-336 | UNF-Btreive-Unformatted-File |
| TechTarget file types | art-336 | UNF-Universal-NES-Image-Interchange-File-Format |
| English | eng-000 | Btreive Unformatted File |
| English | eng-000 | Universal NES Image Interchange File Format |