| Extension | File Description |
| .LSH | Uncommon Files |
| .LSI | Uncommon Files |
| .LSJ | Uncommon Files |
| .LSK | Uncommon Files |
| .LSL | Data Files |
| .LSLANG | Uncommon Files |
| .LSLIDE | Uncommon Files |
| .lsm | Uncommon Files |
| .LSN | Misc Files |
| .LSO | Audio Files |
| .LSP | Data Files |
| .LSQ | Uncommon Files |
| .LSR | Data Files |
| .LSS | Uncommon Files |
| .LSSAVE | Uncommon Files |
| .LST | Data Files |
| .LSU | Uncommon Files |
| .LSV | Uncommon Files |
| .LSW | Game Files |
| .LSX | Video Files |
| .LSY | Uncommon Files |
| .LSZ | Uncommon Files |
| .LS_ | Uncommon Files |
| .LT | Uncommon Files |
| .LT0 | Uncommon Files |
| .LT1 | Uncommon Files |
| .LT2 | 3D Image Files |
| .LT3 | Uncommon Files |
| .LT4 | Uncommon Files |
| .LT5 | Uncommon Files |
| .LT6 | Uncommon Files |
| .LT7 | Uncommon Files |
| .LT8 | Uncommon Files |
| .LT9 | Uncommon Files |
| .LTA | Uncommon Files |
| .LTB | Uncommon Files |
| .LTC | Uncommon Files |
| .LTD | Uncommon Files |
| .LTE | Uncommon Files |
| .LTF | Misc Files |
| .LTG | Uncommon Files |
| .LTH | Uncommon Files |
| .LTI | Uncommon Files |
| .LTJ | Uncommon Files |
| .LTK | Uncommon Files |
| .LTL | Uncommon Files |
| .LTM | Uncommon Files |
| .LTN | Uncommon Files |
| .LTO | Uncommon Files |
| .LTP | Uncommon Files |
| .LTPL | Uncommon Files |
| .LTQ | Uncommon Files |
| .LTR | Text Files |
| .LTS | Uncommon Files |
| .LTT | Uncommon Files |
| .LTU | Uncommon Files |
| .LTV | Uncommon Files |
| .LTW | Uncommon Files |
| .LTX | Game Files |
| .LTY | Uncommon Files |
| .LTZ | Uncommon Files |
| .LU | Uncommon Files |
| .LU0 | Uncommon Files |
| .LU1 | Uncommon Files |
| .LU2 | Uncommon Files |
| .LU3 | Uncommon Files |
| .LU4 | Uncommon Files |
| .LU5 | Uncommon Files |
| .LU6 | Uncommon Files |
| .LU7 | Uncommon Files |
| .LU8 | Uncommon Files |
| .LU9 | Uncommon Files |
| .LUA | Developer Files |
| .LUB | Uncommon Files |
| .LUC | Uncommon Files |
| Extension | File Description |
| .LUCS | Uncommon Files |
| .LUD | Uncommon Files |
| .LUDI_PSEUD | Uncommon Files |
| .LUE | Uncommon Files |
| .LUF | Text Files |
| .LUG | Uncommon Files |
| .LUH | Uncommon Files |
| .LUI | Uncommon Files |
| .LUJ | Uncommon Files |
| .LUK | Uncommon Files |
| .LUL | Uncommon Files |
| .LUM | Uncommon Files |
| .LUMPSUM | Uncommon Files |
| .LUN | Uncommon Files |
| .LUNCH | Uncommon Files |
| .LUO | Uncommon Files |
| .LUP | Uncommon Files |
| .LUQ | Uncommon Files |
| .LUR | Uncommon Files |
| .LUS | Uncommon Files |
| .LUT | Uncommon Files |
| .LUTE | Uncommon Files |
| .LUU | Uncommon Files |
| .LUV | Uncommon Files |
| .LUW | Uncommon Files |
| .LUX | Uncommon Files |
| .LUXB | Game Files |
| .LUY | Uncommon Files |
| .LUZ | Uncommon Files |
| .LV0 | Uncommon Files |
| .LV1 | Uncommon Files |
| .LV2 | Uncommon Files |
| .LV3 | Uncommon Files |
| .LV4 | Uncommon Files |
| .LV5 | Uncommon Files |
| .LV6 | Uncommon Files |
| .LV7 | Uncommon Files |
| .LV8 | Uncommon Files |
| .LV9 | Uncommon Files |
| .LVA | Settings Files |
| .LVB | Uncommon Files |
| .LVC | Uncommon Files |
| .LVD | Uncommon Files |
| .LVE | Uncommon Files |
| .LVF | Settings Files |
| .LVG | Uncommon Files |
| .LVH | Uncommon Files |
| .LVI | Uncommon Files |
| .LVJ | Uncommon Files |
| .LVK | Uncommon Files |
| .LVL | Game Files |
| .LVM | Data Files |
| .LVN | Uncommon Files |
| .LVO | Uncommon Files |
| .LVP | Audio Files |
| .LVQ | Uncommon Files |
| .LVR | Uncommon Files |
| .LVS | Uncommon Files |
| .LVT | Uncommon Files |
| .LVU | Uncommon Files |
| .LVV | Uncommon Files |
| .LVW | Data Files |
| .LVX | Uncommon Files |
| .LVY | Uncommon Files |
| .LVZ | Uncommon Files |
| .LW | Uncommon Files |
| .LW0 | Uncommon Files |
| .LW1 | Uncommon Files |
| .LW2 | Uncommon Files |
| .LW3 | Uncommon Files |
| .LW4 | Data Files |
| .LW5 | Uncommon Files |
| .LW6 | Uncommon Files |
| .LW7 | Uncommon Files |
| .LW8 | Uncommon Files |
