Galactic Civilizations

Inspired game: Space Opera

GalaxyMage

Inspired game: GalaxyMage Redux

Game of Life

Inspired games: Cultivation, Golly

GearHead

Inspired game: GearHead 2

Gish

Inspired games: freegish, Gish

GL-117

Inspired game: RedShift

Gladiator

Inspired game: Openglad

Glest

Inspired game: MegaGlest

Gloom

Inspired game: ZGloom

GLtron

Inspired game: GL TRON

God of War

Inspired game: Captain Blood

Gods

Inspired game: Gods Deluxe

GoldenEye 007

Inspired game: GoldenEye: Source

Gorillas

Inspired games: Gorillas, Gorillas-rs

Gothic

Inspired games: OpenGothic, REGoth

Gothic II

Inspired games: OpenGothic, REGoth

Grand Theft Auto

Inspired games: Carnage3D, OpenGTA

Grand Theft Auto 2

Inspired game: gta2net

Grand Theft Auto III

Inspired games: OpenLiberty, OpenRW

Grand Theft Auto: San Andreas

Inspired games: Grit Game Engine, SanAndreasUnity

Grand Theft Auto: Vice City

Inspired game: OpenVice

Gravity Force

Inspired games: Galaxy Forces V2, Moagg2

Grim Fandango

Inspired game: ResidualVM

Guitar Hero

Inspired games: Frets on Fire, Frets on Fire X, Performous, YARG (Yet Another Rhythm Game)

Gunbound

Inspired game: OpenBound

Gunpoint

Inspired game: Clonepoint

Gwent

Inspired game: Walic