Companies starting with G
- G-Mode
- G.Skill
- G1M2
- Gaggle Studios
- Gaijin Entertainment
- Gaijin Games
- Gaikai Inc.
- Galactic Annihilation
- Galactic Cafe
- Galaxy Grove
- Gamatron
- Game Arts
- Game Freak
- Game Grumps
- Game Informer
- Game River
- Game Science
- Game Source Studio
- GameLoft
- Gameloft Montreal
- GameMill Entertainment
- Gameparic
- Gamepires
- Gamer Network
- GamersGate
- Games Farm
- Games Incubator
- Games Jobs Direct
- Games Operators
- Games Workshop
- GameSpot
- GameStop
- Gamezoo Studio
- Gami Studio
- Gaming Factory
- Gaming Minds Studios
- Gammera Nest
- Garage Heathen
- Garena
- Gas Powered Games
- Gaslamp Games
- Gato Studio
- Gazillion Entertainment
- Gaziter
- GazpieStudio
- Gearbox
- Gearbox Publishing
- Gearbox Software
- Gears for Breakfast
- General Arcade
- General Interactive Co.
- Gentleman Rat
- Gentlymad Studios
- Genuine Games
- Genvid
- Geography Of Robots
- Geometric Interactive
- GFX47
- Ghost Games
- Ghost Ship Games
- Ghost Ship Publishing
- Ghost Story Games
- Giant Bomb
- Giant Flame
- Giant Sparrow
- Giant Squid
- GIANTS Software
- Giddy Goat Games
- Gigabyte
- Gioteck
- Glass Bottom Games
- Glitch Games
- GLOAM
- Global Game Jam
- Global Star Software
- Glorious
- Glu Mobile
- GMX Media
- Gnomecraft
- Go On Board
- GOA
- Goblinz Studios
- GOG.com
- Goldhawk Interactive
- Gone North Games
- Good Shepherd Entertainment
- Goodwin Games
- GR3 Project
- GrabTheGames
- Graffiti Games
- GrahamOfLegend
- Graphsim Entertainment
- Grasshopper Manufacture
- Gravity Game Arise
- Green Man Gaming
- GreenGuy
- Gregor Bestelmeyer
- Grenaa Games
- Grey Box
- Greylock Studio
- Grimbart Tales
- Grimlore Games
- Grinding Gear Games
- Grindstone
- Grip Digital
- Griptonite Games
- Ground Shatter
- GSC Game World
- Guerrilla Games
- Gugames
- Guinness World Records
- Gummy Cat
- Gun Hit Wonders
- Gun Media
- Gunfire Games
- GungHo Online Entertainment Inc.
- Gunzilla Games
- Gust