- GameBook
- GameLayer
- GapHook
- Gapps
- GASEK
- Gasera
- GBuilder
- Gecko Landmarks
- Gemic
- Genano
- Genie Teams
- Genomill
- GetJenny
- Get Localization
- Get Tips
- Geyser Batteries
- Gigglebug Entertainment
- Gim
- Ginolis
- Giosg.com
- GitHits
- Gixon
- Gloriana Games
- GlowWay
- GlucoModicum
- Glucostratus
- Glue
- Glykos Finland
- Golden Malt
- Golf Earth
- Goodmill
- Good Sign
- GoSleep
- Gosta Labs
- Grail Group
- GrainSense
- Grand Cru
- Granite Partners
- GraphoGame
- Gravito
- Greenele
- Greener Grass
- Green House Effect
- Greenlux Finland
- GreenRiders
- Grey Area
- GreyCrunch
- Grocialist
- Groundhawk
- Grumblo
- gTIE
- Gugguu
- Gurufield
- Gurux
