| Go-Go! Ice Challenge Ultimate! | doomguard | Ike Ike! Nekketsu Hockey Bu: Subette Koronde Dairantou | Sports | NES | G, S, L, T, GP | Complete | hk2_10_f4 | 21 Sep 2020 |
| Go! Go! Cosmo Cops! Japanese language fix | Nagato | Go! Go! Cosmo Cops! | Action > Platformer | NDS | T, O | Improvement | 1.0 | 22 Nov 2012 |
| Go! Dizzy Go! UxROM Mapper Hack | MottZilla | Quattro Arcade | Other | NES | O | Improvement | 1.0 | 23 Jul 2008 |
| GO! Dizzy GO! HARD | Dizzy9 | Quattro Arcade | Other | NES | S, L, T, GP | Complete | 1.0 | 10 Sep 2010 |
| Go Go! Nekketsu Hockey Club Extreme | DANGER X | Ike Ike! Nekketsu Hockey Bu: Subette Koronde Dairantou | Sports | NES | G, S, L, T, GP, O | Complete | 2.0 | 20 Jun 2013 |
| Glover2 Prototype Bugfix | Zoinkity | Glover 2 | Action > Platformer | N64 | S, O | Bug Fix | 1.0 | 26 Aug 2021 |
| Glover July 16, 1998 Prototype Corrective Patch | Zoinkity | Glover | Action > Platformer | N64 | S, O | Bug Fix | 1.0 | 23 Sep 2021 |
| Giygas999's Speed Challenge | Giygas999 | EarthBound | Role Playing | SNES | L, GP, O | Complete | 1.0 | 29 Dec 2020 |
| Git Up, Git Out, Git Gud | wilsonpenn | Super Mario Bros. 3 | Action > Platformer | NES | G, L, T, GP | Complete | 2.01 | 03 Feb 2022 |
| Girl Team to the Rescue (Chip & Dale Gadget) | Zus | Disney's Chip 'n Dale: Rescue Rangers | Action > Platformer | NES | G, T | Improvement | 0.2 | 20 Oct 2016 |
| Girl Dream-Topia (SMB1 Hack) | THE UNGGOY | Super Mario Bros. | Action > Platformer | NES | G, S, L, T, GP | Complete | 1.0 | 07 Feb 2018 |
| Gimmick! Quality-of-Life Mod | SadColor | Mr. Gimmick | Action > Platformer | NES | GP | Improvement | 1.0 | 22 Sep 2022 |
| Gimmick! More than a simple toy | lancuster | Mr. Gimmick | Action > Platformer | NES | L, T, O | Improvement | 1.0 | 19 Dec 2015 |
| Gimmick! Easy Hack | MisterGimmick | Mr. Gimmick | Action > Platformer | NES | GP | Improvement | 1.0 | 08 Aug 2020 |
| Gimmick! - Fixed Samples | TakuikaNinja | Mr. Gimmick | Action > Platformer | NES | S | Bug Fix | 1.0 | 29 May 2022 |
| Gigas Bosses Disassemble Less Often | Kethinov | Secret of Mana | Role Playing > Action RPG | SNES | GP | Improvement | 1.1 | 02 Jan 2020 |
| Giant Mario Bros. | N·K | Super Mario Bros. | Action > Platformer | NES | G, L, GP | Improvement | 1.2 | 08 Dec 2021 |
| Ghouls n' Ghosts SRAM | BillyTime! Games | Ghouls 'n Ghosts | Action > Platformer | GEN | O | Improvement | 1.1 | 16 Nov 2022 |
| Ghosts'n Goblins Restoration | SCD | Ghosts 'n Goblins | Action > Platformer | NES | G, T | Improvement | Final | 09 Dec 2019 |
| Ghosts'n Goblins MMC3 Patch | RetroRain | Ghosts 'n Goblins | Action > Platformer | NES | O | Improvement | 1.0 | 15 Jan 2014 |
