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- A Game of Thrones - based on the eponymous fantasy novel by George R.R. Martin
- Gamma World by TSR, Inc.
- Gangbusters by TSR, Inc. - 1930s urban crime adventure
- Ganghedge by Empire Wargames
- Gatecrasher - a tongue-in-cheek science-fiction & fantasy setting
- Gaterunner - based on the novel Gatecrash
- Geist: The Sin-Eaters (new World of Darkness)
- Ghostbusters by West End Games - based on the Ghostbusters film series
- Ghosts of Albion by Eden Studios - based on the Ghosts of Albion animations and novels by Amber Benson and Christopher Golden.
- Godlike by Hawthorn Hobgoblynn Press
- Golden Heroes by Games Workshop
- Gossip Beverly Hills based on the Gossip Girl film series - 2008s urban drama adventure
- Gothic
- The Great Commission - a d20 Christian RPG
- Grey Ranks
- Grimm
- Guardians by StarChilde Publications
- Gunslingers and Gamblers - set in the American Wild West of 1876
- GURPS by Steve Jackson Games - "Generic Universal Role Playing System"
Read more about this topic: List Of Role-playing Games By Name