| .gbx |
Nadeo Game File |
| .gbc |
Game Boy Color ROM |
| .gg |
Google Desktop Gadget File |
| .gc |
GraphClick File |
| .gb |
Game Boy ROM File |
| .gcd |
Generic CADD Drawing File |
| .gr2 |
Granny 3D File |
| .gmres |
GameMaker Resource File |
| .g3x |
RealFlight Content File |
| .gpf |
Gecko Patch File |
| .galaxy |
Blizzard Galaxy File |
| .grp |
StarCraft Graphics Group File |
| .glb |
STK Globe File |
| .gsc |
Call of Duty Game Script |
| .gla |
Sothink SWF Easy Project File |
| .game |
Apple Chess Saved Game |
| .gen |
Sega Genesis ROM |
| .gfx |
GFx Scaleform File |
| .gcs |
Cineform Studio Video Project |
| .gpd |
Generic Printer Description File |
| .gdi |
Dreamcast Gigabyte Disc Image |
| .gbaskin |
Game Boy Advance Controller Skin File |
| .gbcskin |
Game Boy Color Controller Skin File |
| .gma |
Garry's Mod Addon File |