| Daimakaimura SGX Debug menu | Chris M. Covell | Dai Makaimura | Action > Platformer | SGFX | G, S, L, GP | Improvement | 1.0 | 02 May 2007 |
| Damage Animation Improvement | Bregalad | Blaster Master | Action Adventure | NES | G | Improvement | 1.0 | 22 Feb 2009 |
| Dancer/Stripper Restoration Hack | Dragonsbrethren | Final Fantasy IV Advance | Role Playing | GBA | G | Improvement | 1.0 | 13 Dec 2005 |
| Danger's ice hockey | DANGER X | Ike Ike! Nekketsu Hockey Bu: Subette Koronde Dairantou | Sports | NES | G, S, L, T, GP, O | Complete | 2.0 | 13 May 2015 |
| Dangerman | DANGER X | Bomberman | Action | NES | G, L, T, GP | Complete | 1.0 | 23 Apr 2021 |
| Darius II | modda.se | Sagaia | Action > Shooter | GB | G | Improvement | 1.0 | 02 Jun 2018 |
| Darius II - Enhanced Colors | Pyron | Sagaia | Action > Shooter | GEN | G | Improvement | 1.0 | 23 Feb 2016 |
| Darius Twin - Fastrom | kandowontu | Darius Twin | Action > Shooter | SNES | GP | Improvement | 1.0 | 22 Feb 2023 |
| Dark Cloud NTSC - Flapping Duster Fix | cynTech | Dark Cloud | Role Playing > Action RPG | PS2 | O | Bug Fix | 1.0 | 01 Apr 2017 |
| Dark Cloud PAL - Flapping Duster Fix | Schicksal88 | Dark Cloud | Role Playing > Action RPG | PS2 | O | Bug Fix | 1.0 | 11 Feb 2017 |
| Dark Gimmick! | Berion | Mr. Gimmick | Action > Platformer | NES | G, L, O | Complete | 1.1 | 21 Nov 2014 |
| Dark Rift - Secret characters unlocked | gallaux | Dark Rift | Action > Fighting | N64 | GP | Improvement | 1.0 | 10 Dec 2022 |
| Dark Sound The Hedgehog | CiS | Sonic the Hedgehog | Action > Platformer | GEN | G, S, L, T, GP, O | Complete | 2.00 | 01 Jan 2011 |
| Darkness returns | Lunaria | Super Metroid | Action Adventure | SNES | G, L, GP | Complete | 1.1 | 07 Sep 2013 |
| DarkRaichus' Minor Em | DarkRaichus | Pokémon: Emerald Version | Role Playing | GBA | T, GP | Improvement | 1.1.3 | 10 Dec 2022 |
| Darkstalkers 3 - Uncensored Hack | Ortew | Darkstalkers 3 | Action > Fighting | PSX | G, O | Improvement | 1.0 | 18 Jan 2021 |
| Darkwing Duck - MMC1 to MMC3 | infidelity | Darkwing Duck | Action | NES | O | Improvement | 1.0 | 17 Sep 2013 |
| Darkwing Duck - SoR2 music | Ti | Darkwing Duck | Action | NES | S | Improvement | 1.0 | 23 May 2015 |
| Darkwing Duck Advance | sergi & evgeny | Darkwing Duck | Action | NES | G, S, L | Improvement | 1.0 | 31 Dec 2012 |
| Darkwing Duck In Edoropolis | Emsi-D | Darkwing Duck | Action | NES | G, S, L, GP | Complete | 1.1 | 12 Dec 2021 |
