| Extension | File Description |
| .MP1 | Audio Files |
| .MP2 | Audio Files |
| .MP21 | Video Files |
| .MP2A | Audio Files |
| .MP2M | Game Files |
| .MP2S | Game Files |
| .MP2V | Video Files |
| .MP3 | Audio Files |
| .MP3G | Audio Files |
| .MP3MAN | Uncommon Files |
| .MP3PRO | Uncommon Files |
| .MP4 | Video Files |
| .MP4A | Audio Files |
| .MP4S | Video Files |
| .MP4V | Video Files |
| .MP5 | Uncommon Files |
| .MP6 | Uncommon Files |
| .MP7 | Uncommon Files |
| .MP8 | Uncommon Files |
| .MP9 | Uncommon Files |
| .MP? | Audio Files |
| .MPA | Audio Files |
| .MPB | Backup Files |
| .MPC | Audio Files |
| .MPCB | Uncommon Files |
| .MPCF | Uncommon Files |
| .MPCPL | Misc Files |
| .MPD | Data Files |
| .MPDEX | Uncommon Files |
| .MPE | Video Files |
| .MPE.EXE | Uncommon Files |
| .MPEG | Video Files |
| .MPF | Video Files |
| .MPFA | Uncommon Files |
| .MPG | Video Files |
| .MPG4 | Uncommon Files |
| .MPGA | Audio Files |
| .MPH | Uncommon Files |
| .MPI | Data Files |
| .MPJ | Data Files |
| .MPK | Game Files |
| .MPKG | Compressed Files |
| .MPL | Video Files |
| .MPLS | Video Files |
| .MPM | Game Files |
| .MPN | Uncommon Files |
| .MPNT | Uncommon Files |
| .MPO | Raster Image Files |
| .MPP | Data Files |
| .MPQ | Game Files |
| .MPQE | Uncommon Files |
| .MPR | Data Files |
| .MPS | Data Files |
| .MPT | Data Files |
| .MPU | Uncommon Files |
| .MPV | Video Files |
| .MPV2 | Video Files |
| .MPW | Settings Files |
| .MPX | Data Files |
| .MPY | Uncommon Files |
| .MPZ | Data Files |
| .MQ0 | Uncommon Files |
| .MQ1 | Uncommon Files |
| .MQ2 | Uncommon Files |
| .MQ3 | Uncommon Files |
| .MQ4 | Data Files |
| .MQ5 | Uncommon Files |
| .MQ6 | Uncommon Files |
| .MQ7 | Uncommon Files |
| .MQ8 | Uncommon Files |
| .MQ9 | Uncommon Files |
| .MQA | Uncommon Files |
| .MQB | Uncommon Files |
| .MQC | Uncommon Files |
| .MQD | Uncommon Files |
| Extension | File Description |
| .MQE | Uncommon Files |
| .MQF | Uncommon Files |
| .MQG | Uncommon Files |
| .MQH | Uncommon Files |
| .MQI | Uncommon Files |
| .MQJ | Uncommon Files |
| .MQK | Uncommon Files |
| .MQL | Uncommon Files |
| .MQM | Uncommon Files |
| .MQN | Uncommon Files |
| .MQO | 3D Image Files |
| .MQP | Uncommon Files |
| .MQQ | Uncommon Files |
| .MQR | Uncommon Files |
| .MQS | Uncommon Files |
| .MQT | Uncommon Files |
| .MQU | Uncommon Files |
| .MQV | Video Files |
| .MQW | Uncommon Files |
| .MQX | Uncommon Files |
| .MQY | Data Files |
| .MQZ | Uncommon Files |
| .MR0 | Uncommon Files |
| .MR1 | Uncommon Files |
| .MR2 | Uncommon Files |
| .MR3 | Uncommon Files |
| .MR4 | Uncommon Files |
| .MR5 | Uncommon Files |
| .MR6 | Uncommon Files |
| .MR7 | Uncommon Files |
| .MR8 | Uncommon Files |
| .MR9 | Uncommon Files |
| .MRA | Uncommon Files |
| .MRB | Raster Image Files |
| .MRC | Executable Files |
| .MRCX | Data Files |
| .MRD | Uncommon Files |
| .MRE | Uncommon Files |
| .MRES | Uncommon Files |
| .MRF | Uncommon Files |
| .MRG | Database Files |
| .MRH | Uncommon Files |
| .MRI | Uncommon Files |
| .MRIMG | Disk Image Files |
| .MRJ | Uncommon Files |
| .MRK | Misc Files |
| .MRL | Uncommon Files |
| .MRLV | Uncommon Files |
| .MRM | Uncommon Files |
| .MRN | Uncommon Files |
| .MRO | Uncommon Files |
| .MRP | Uncommon Files |
| .MRQ | Uncommon Files |
| .MRR | Uncommon Files |
| .MRS | Game Files |
| .MRT | Uncommon Files |
| .MRU | Uncommon Files |
| .MRV | Uncommon Files |
| .MRW | Raster Image Files |
| .MRX | Uncommon Files |
| .MRY | Uncommon Files |
| .MRZ | Uncommon Files |
| .MS | Executable Files |
| .MS0 | Uncommon Files |
| .MS1 | Game Files |
| .MS2 | Uncommon Files |
| .MS3 | Uncommon Files |
| .MS3D | 3D Image Files |
| .MS4 | Uncommon Files |
| .MS5 | Uncommon Files |
| .MS6 | Uncommon Files |
| .MS7 | Uncommon Files |
| .MS8 | Data Files |
| .MS9 | CAD Files |
| .MSA | Uncommon Files |
