| Extension | File Description |
| .BA0 | Uncommon Files |
| .BA1 | Uncommon Files |
| .BA2 | Uncommon Files |
| .BA3 | Uncommon Files |
| .BA4 | Uncommon Files |
| .BA5 | Uncommon Files |
| .BA6 | Uncommon Files |
| .BA7 | Uncommon Files |
| .BA8 | Uncommon Files |
| .BA9 | Uncommon Files |
| .BAA | Uncommon Files |
| .BAB | Uncommon Files |
| .BABAR | Uncommon Files |
| .BABER | Uncommon Files |
| .BACH | Uncommon Files |
| .BACHTOLD | Uncommon Files |
| .BACK | Uncommon Files |
| .BACKGAMON | Uncommon Files |
| .BACKGRND | Uncommon Files |
| .BACKGROUND | Uncommon Files |
| .BACKPACK | Uncommon Files |
| .BACKUP | Uncommon Files |
| .BACLOOP7 | Uncommon Files |
| .BADONGO | Uncommon Files |
| .BAE | Uncommon Files |
| .BAF | Uncommon Files |
| .BAG | Uncommon Files |
| .BAH | Uncommon Files |
| .BAI | Uncommon Files |
| .BAJ | Uncommon Files |
| .BAL | Uncommon Files |
| .BALANCE | Uncommon Files |
| .BALL | Uncommon Files |
| .BALL2 | Uncommon Files |
| .BAM | Uncommon Files |
| .BAN | Uncommon Files |
| .BANGER | Uncommon Files |
| .BANJ | Uncommon Files |
| .BANK | Uncommon Files |
| .BANKSW | Uncommon Files |
| .BANNER | Uncommon Files |
| .BAO | Uncommon Files |
| .BAP | Uncommon Files |
| .BAQ | Uncommon Files |
| .BAS2 | Uncommon Files |
| .BAS7 | Uncommon Files |
| .BASE | Uncommon Files |
| .bash | Uncommon Files |
| .BASIN | Uncommon Files |
| .BASKETBALL | Uncommon Files |
| .BASS | Uncommon Files |
| .BASS1 | Uncommon Files |
| .BASS2 | Uncommon Files |
| .BASSD | Uncommon Files |
| .BASSDRU2 | Uncommon Files |
| .BASSG | Uncommon Files |
| .BATCH | Uncommon Files |
| .BATH | Uncommon Files |
| .BAVANT | Uncommon Files |
| .BAW | Uncommon Files |
| .BAX | Uncommon Files |
| .BAZ | Uncommon Files |
| .BB0 | Uncommon Files |
| .BB1 | Uncommon Files |
| .BB2 | Uncommon Files |
| .BB3 | Uncommon Files |
| .BB4 | Uncommon Files |
| .BB5 | Uncommon Files |
| .BB6 | Uncommon Files |
| .BB7 | Uncommon Files |
| .BB8 | Uncommon Files |
| .BB9 | Uncommon Files |
| .BBA | Uncommon Files |
| .BBB | Uncommon Files |
| .BBD | Uncommon Files |
| Extension | File Description |
| .BBE | Uncommon Files |
| .BBF | Uncommon Files |
| .bbg | Uncommon Files |
| .BBH | Uncommon Files |
| .BBI | Uncommon Files |
| .BBJ | Uncommon Files |
| .BBK | Uncommon Files |
| .bbl | Uncommon Files |
| .BBM | Uncommon Files |
| .BBMA | Uncommon Files |
| .BBN | Uncommon Files |
| .BBNNG | Uncommon Files |
| .BBO | Uncommon Files |
| .BBP | Uncommon Files |
| .BBQ | Uncommon Files |
| .BBR | Uncommon Files |
| .BBRKPUZZLE | Uncommon Files |
| .BBRKSAVE | Uncommon Files |
| .BBT | Uncommon Files |
| .BBU | Uncommon Files |
| .BBV | Uncommon Files |
| .BBW | Uncommon Files |
| .BBX | Uncommon Files |
| .BBY | Uncommon Files |
| .BBZ | Uncommon Files |
| .BC0 | Uncommon Files |
| .BC1 | Uncommon Files |
| .BC2 | Uncommon Files |
| .BC3 | Uncommon Files |
| .BC4 | Uncommon Files |
| .BC5 | Uncommon Files |
| .BC6 | Uncommon Files |
| .BC7 | Uncommon Files |
| .BC8 | Uncommon Files |
| .BC9 | Uncommon Files |
| .BCA | Uncommon Files |
| .BCB | Uncommon Files |
| .BCB3 | Uncommon Files |
| .BCD | Uncommon Files |
| .BCE | Uncommon Files |
| .BCG | Uncommon Files |
| .BCH | Uncommon Files |
| .BCJ | Uncommon Files |
| .BCL | Uncommon Files |
| .BCMR | Uncommon Files |
| .BCN | Uncommon Files |
| .BCO | Uncommon Files |
| .BCQ | Uncommon Files |
| .BCR | Uncommon Files |
| .BCU | Uncommon Files |
| .BCV | Uncommon Files |
| .BCW | Uncommon Files |
| .BCX | Uncommon Files |
| .BCY | Uncommon Files |
| .BCZ | Uncommon Files |
| .BD | Uncommon Files |
| .BD0 | Uncommon Files |
| .BD1 | Uncommon Files |
| .BD2 | Uncommon Files |
| .BD3 | Uncommon Files |
| .BD4 | Uncommon Files |
| .BD5 | Uncommon Files |
| .BD6 | Uncommon Files |
| .BD7 | Uncommon Files |
| .BD8 | Uncommon Files |
| .BD9 | Uncommon Files |
| .BDA | Uncommon Files |
| .BDBZM | Uncommon Files |
| .BDE | Uncommon Files |
| .BDG | Uncommon Files |
| .BDH | Uncommon Files |
| .BDI | Uncommon Files |
| .BDJ | Uncommon Files |
| .BDK | Uncommon Files |
| .BDN | Uncommon Files |
