| Alien Resurrection: New control buttons config | Mr2 | Alien Resurrection | Action > Shooter | PSX | GP | Improvement | 0.1 | 18 Oct 2016 |
| Rick and Morty + Skin colour fix | Crying Onion | Alien Syndrome | Action > Shooter | NES | G | Improvement | 1.1 | 06 May 2018 |
| Aliens (FDS) Fix Hack | lancuster | Aliens: Alien 2 | Action > Platformer | FDS | G, L | Improvement | 1.0 | 29 Dec 2017 |
| All Night Nippon: Restore original Spiny behavior | ZeroShift | All Night Nippon Super Mario Bros. | Action > Platformer | FDS | GP | Bug Fix | 1.0 | 21 Mar 2019 |
| Alleyway Highscore Save | Alex-iG | Alleyway | Puzzle | GB | O | Improvement | 1.0 | 11 Oct 2019 |
| Altered Beast - Alternate Style | Pyron | Altered Beast | Action > Beat 'Em Up | GEN | G | Improvement | 2.0 | 15 Nov 2015 |
| Altered Beast with Arcade Voice Samples | Linkuei | Altered Beast | Action > Beat 'Em Up | GEN | S | Improvement | 1.0 | 21 Jan 2016 |
| Altered Space - Wave channel fix | DevEd | Altered Space: A 3-D Alien Adventure | Puzzle | GB | S | Improvement | 1.0 | 01 Mar 2018 |
| American Gladiators MMC1 to MMC3 | BZK | American Gladiators | Sports | NES | O | Improvement | 001 | 03 Nov 2016 |
| Animamundi - Missing items fix | Iredc | Animamundi: Dark Alchemist | Visual Novel | PC | O | Bug Fix | 1.1 | 26 Jan 2018 |
| Animaniacs - Sound Test Restored | DUSTINODELLOFFICIAL | Animaniacs | Action > Platformer | GEN | T, O | Improvement | 1.0 | 15 May 2018 |
| Touhou Otsutoutou | DASTARD | Antarctic Adventure | Racing | NES | G, T | Improvement | 1.0 | 01 Feb 2008 |
| Fair Random Battle | Docrow | Arabian Nights: Sabaku no Seirei Ou | Role Playing | SNES | GP | Improvement | 1.0 | 19 Jul 2017 |
| Arcana EasyType | JCE3000GT | Arcana | Role Playing | SNES | GP | Improvement | 1.0 FINAL | 17 Nov 2011 |
| Arcana Hardtype | zombero | Arcana | Role Playing | SNES | GP | Complete | 1.0 | 26 May 2013 |
| Arcana - Fastrom | rainponcho | Arcana | Role Playing | SNES | GP | Improvement | 0.6 | 05 May 2019 |
| Arcana - Multi Level-up | rainponcho | Arcana | Role Playing | SNES | GP | Improvement | 1.0 | 22 Mar 2019 |
| Arcana - Seal of Rimsala | Sarah Shinespark | Arcana | Role Playing | SNES | G, S, L, T, O | Improvement | 1.0c | 12 May 2019 |
| Arkanoid - Dimension of DOH!! | DragonEye Studios | Arkanoid | Action | NES | L | Complete | 1.0 | 01 Jan 2002 |
| Nittere Brand | Rinkaku | Arkanoid | Action | NES | G | Improvement | 1.0 | 01 Jan 2002 |
