| Extension | File Description |
| .GJD | Game Files |
| .GJE | Uncommon Files |
| .GJF | Uncommon Files |
| .GJG | Uncommon Files |
| .GJH | Uncommon Files |
| .GJI | Uncommon Files |
| .GJJ | Uncommon Files |
| .GJK | Uncommon Files |
| .GJL | Uncommon Files |
| .GJM | Uncommon Files |
| .GJN | Uncommon Files |
| .GJO | Uncommon Files |
| .GJP | Uncommon Files |
| .GJQ | Uncommon Files |
| .GJR | Uncommon Files |
| .GJS | Uncommon Files |
| .GJT | Uncommon Files |
| .GJU | Uncommon Files |
| .GJV | Uncommon Files |
| .GJW | Uncommon Files |
| .GJX | Uncommon Files |
| .GJY | Uncommon Files |
| .GJZ | Uncommon Files |
| .GK0 | Uncommon Files |
| .GK1 | Uncommon Files |
| .GK2 | Uncommon Files |
| .GK3 | Uncommon Files |
| .GK4 | Uncommon Files |
| .GK5 | Uncommon Files |
| .GK6 | Uncommon Files |
| .GK7 | Uncommon Files |
| .GK8 | Uncommon Files |
| .GK9 | Uncommon Files |
| .GKA | Uncommon Files |
| .GKB | Uncommon Files |
| .GKC | Uncommon Files |
| .GKD | Uncommon Files |
| .GKE | Uncommon Files |
| .GKF | Uncommon Files |
| .GKG | Uncommon Files |
| .GKH | Disk Image Files |
| .GKI | Uncommon Files |
| .GKJ | Uncommon Files |
| .GKK | Uncommon Files |
| .GKL | Uncommon Files |
| .GKM | Uncommon Files |
| .GKN | Uncommon Files |
| .GKO | Uncommon Files |
| .GKP | Uncommon Files |
| .GKQ | Uncommon Files |
| .GKR | Uncommon Files |
| .GKS | Vector Image Files |
| .GKT | Uncommon Files |
| .GKU | Uncommon Files |
| .GKV | Uncommon Files |
| .GKW | Uncommon Files |
| .GKX | Uncommon Files |
| .GKY | Uncommon Files |
| .GKZ | Uncommon Files |
| .GL | Video Files |
| .GL0 | Uncommon Files |
| .GL1 | Uncommon Files |
| .GL2 | Uncommon Files |
| .GL3 | Uncommon Files |
| .GL4 | Uncommon Files |
| .GL5 | Uncommon Files |
| .GL6 | Uncommon Files |
| .GL7 | Uncommon Files |
| .GL8 | Uncommon Files |
| .GL9 | Uncommon Files |
| .GLA | Uncommon Files |
| .GLADE | Developer Files |
| .GLB | Game Files |
| .GLC | Uncommon Files |
| .GLD | Data Files |
| Extension | File Description |
| .GLE | Uncommon Files |
| .GLF | Uncommon Files |
| .GLG | Uncommon Files |
| .GLH | Uncommon Files |
| .GLI | Uncommon Files |
| .GLJ | Uncommon Files |
| .GLK | Uncommon Files |
| .GLL | Uncommon Files |
| .GLM | Uncommon Files |
| .GLN | Uncommon Files |
| .GLO | Uncommon Files |
| .GLOBAL | Developer Files |
| .GLOBALS | Uncommon Files |
| .GLOSS | Uncommon Files |
| .GLOSSARY | Uncommon Files |
| .GLOSSARYAS | Uncommon Files |
| .GLOX | Vector Image Files |
| .GLP | Uncommon Files |
| .GLQ | Uncommon Files |
| .GLR | Uncommon Files |
| .GLS | Vector Image Files |
| .GLT | Uncommon Files |
| .GLU | Uncommon Files |
| .GLUE | Uncommon Files |
| .GLUT | Uncommon Files |
| .GLUT2 | Uncommon Files |
| .GLUT3 | Uncommon Files |
| .GLV | Uncommon Files |
| .GLW | Uncommon Files |
| .GLX | Uncommon Files |
| .GLY | Misc Files |
| .GLZ | Uncommon Files |
| .GM | Audio Files |
| .GM0 | Uncommon Files |
| .GM1 | Uncommon Files |
| .GM2 | Uncommon Files |
| .GM3 | Uncommon Files |
| .GM4 | Uncommon Files |
| .GM5 | Uncommon Files |
| .GM6 | Developer Files |
| .GM7 | Uncommon Files |
| .GM8 | Uncommon Files |
| .GM9 | Uncommon Files |
| .GMA | Uncommon Files |
| .GMANIFEST | Uncommon Files |
| .GMAX | Uncommon Files |
| .GMB | Uncommon Files |
| .GMC | Uncommon Files |
| .GMD | Developer Files |
| .GME | Game Files |
| .GMF | GIS Files |
| .GMG | Uncommon Files |
| .GMH | Uncommon Files |
| .GMI | Uncommon Files |
| .GMIN | Uncommon Files |
| .GMJ | Uncommon Files |
| .GMK | Developer Files |
| .GML | Developer Files |
| .GMLWB | Uncommon Files |
| .GML_BBCRSS | Uncommon Files |
| .GMM | Uncommon Files |
| .GMMOD | 3D Image Files |
| .GMMP | System Files |
| .GMN | Uncommon Files |
| .GMO | Developer Files |
| .GMP | Uncommon Files |
| .GMQ | Uncommon Files |
| .GMR | Uncommon Files |
| .GMS | Data Files |
| .GMT | 3D Image Files |
| .GMU | Uncommon Files |
| .GMV | Game Files |
| .GMW | Uncommon Files |
| .GMX | Uncommon Files |
| .GMY | Uncommon Files |
