| Alex Kidd in Miracle World - reverse controls | Calindro | Alex Kidd in Miracle World | Action > Platformer | SMS | GP | Improvement | 1.0 | 23 Oct 2016 |
| Alex Kidd in Miracle World - burger and more | micky | Alex Kidd in Miracle World | Action > Platformer | SMS | G | Improvement | 1.0 | 03 Aug 2017 |
| Alex Kidd - Fall Of Radaxian | TheSegaGuru | Alex Kidd in Miracle World | Action > Platformer | SMS | G, L, T, O | Complete | 1.01 | 28 Jul 2016 |
| Alcon Special | DUSTINODELLOFFICIAL | Slap Fight MD | Action > Shooter | GEN | G, T, O | Improvement | 1.0 | 20 Oct 2018 |
| Aladdin Hummer Team Deluxe | Mario Bendor | Aladdin | Action > Platformer | NES | G, S, GP | Improvement | 2.1 | 07 Dec 2020 |
| Aladdin 4 Music Replacement | Gigasoft | Aladdin | Action > Platformer | NES | S | Improvement | 1.1 | 21 Jul 2014 |
| Aladdin (BUTTON FIX + improvement) | the jabu | Aladdin | Action > Platformer | NES | GP | Improvement | 2.1 | 22 Oct 2014 |
| Akumajou Dracula XX - Visual Tweaks | MetHy | Castlevania: Dracula X | Action > Platformer | SNES | G | Improvement | 1.1 | 16 May 2022 |
| Akumajou Dracula X: Gekka no Yasoukyoku - HardType | Draculax350 | Castlevania: Symphony of the Night | Role Playing > Action RPG | PSX | GP | Improvement | 4.8 | 09 Sep 2021 |
| Akumajou Densetsu - Localization / Title Screen Redone | ShadowOne333 | Castlevania III: Dracula’s Curse | Action > Platformer | NES | G, T | Improvement | 7.1 | 24 Jul 2016 |
| Akumajo Dracula - Vampire Killer - Improvements | FRS | Vampire Killer | Action > Platformer | MSX | O | Improvement | 1.0 | 26 Jul 2011 |
| Akumajō Densetsu - PAL Fix | Bregalad | Castlevania III: Dracula’s Curse | Action > Platformer | NES | O | Bug Fix | 1.0 | 11 Mar 2010 |
| AJ Blaster Master | AlanJacobs | Blaster Master | Action Adventure | NES | G, L | Complete | 1.1 | 12 Feb 2014 |
| AirRace Championship Alternate Edition | AreBeAre | AirRace Championship | Racing | PSX | G, L | Improvement | 1.0 | 03 Jun 2017 |
| Airball (later beta) Direction Fix | elbobelo | Airball | Puzzle | NES | GP | Improvement | 1.0 | 05 Dec 2011 |
| Air Umbrella | Inventor | Balloon Fight | Action | NES | G | Improvement | 1.0 | 01 Jan 2001 |
| Air Fortress 2 | S. K. Dumbbus | Choujikuu Yousai: Macross | Action > Shooter | NES | G, T, GP, O | Complete | 1.0 | 17 Apr 2017 |
| Air Contra | Digital Warrior | S.C.A.T.: Special Cybernetic Attack Team | Action > Shooter | NES | G | Improvement | 2.0 | 17 Apr 2017 |
| After World 8 | insectduel | Super Mario Bros. | Action > Platformer | NES | G, L, T | Complete | 1.0 | 11 Feb 2006 |
| After Lolo 2 | Googie | Banana | Puzzle | NES | G, T | Improvement | 1.0 | 19 Oct 2008 |
