| .bin |
Sega Genesis Game ROM |
| .b |
Grand Theft Auto 3 Saved Game File |
| .bik |
Bink Video File |
| .bsp |
Valve Game 3D Map File |
| .bms |
BeatMania Song File |
| .bzw |
BZFlag World File |
| .bsb |
BioShock Saved Game File |
| .bif |
Get Backup Project File |
| .bgl |
Babylon Glossary File |
| .bo3 |
Minecraft BO3 Object File |
| .bdf |
Binary Data File |
| .big |
Electronic Arts Game Data File |
| .bwa |
BlindWrite Disk Information File |
| .bme |
BeatMania 7-Key Song File |
| .blb |
Dreamworks Resource File |
| .bsa |
Bethesda Softworks Archive |
| .bls |
Blockland Saved Game File |
| .bnk |
Adlib Instrument Bank |
| .bar |
Age of Empires 3 Data File |
| .bmd |
MU Online Game Data File |
| .blz |
N-Gage Mobile Video Game File |
| .bfs |
FlatOut Game Data File |
| .bfg |
Big Fish Games Application File |
| .blp |
Blizzard Texture File |