| Altered Beast with Arcade Voice Samples | Linkuei | Altered Beast | Action > Beat 'Em Up | GEN | S | Improvement | 1.0 | 21 Jan 2016 |
| Altered Beast - Alternate Style | Pyron | Altered Beast | Action > Beat 'Em Up | GEN | G | Improvement | 2.0 | 15 Nov 2015 |
| Alphonse Nightmare - A TKoL Mod (WIP) | ShrimpHead | Tactics Ogre: The Knight of Lodis | Strategy > Turn Based | GBA | L, GP | Addendum | 1.0 | 11 Apr 2023 |
| Alphabetical Lore | SilentEnigma | Final Fantasy III | Role Playing | SNES | T | Improvement | 1.0 | 29 Aug 2022 |
| ALPHA SPHERE: Director's Cut | Daizo Dee Von | Super Mario World | Action > Platformer | SNES | G, S, L, T, GP, O | Complete | 1.0.2 | 30 Jul 2021 |
| ALPHA SPHERE Zero: Rotten Brains | Daizo Dee Von | Super Mario World | Action > Platformer | SNES | G, S, L, T, GP, O | Complete | 1.0.1 | 24 Oct 2022 |
| Alleyway Highscore Save | Alex-iG | Alleyway | Puzzle | GB | O | Improvement | 1.0 | 11 Oct 2019 |
| Alleyway DX | MojoDodo | Alleyway | Puzzle | GB | G, L, GP, O | Complete | 1.1 | 06 Apr 2023 |
| All-Stars + World Luigi in Super Mario Advance 2 | JY | Super Mario World: Super Mario Advance 2 | Action > Platformer | GBA | G | Improvement | 1.0 | 30 Jan 2020 |
| All Subtitles for All Characters | ToxicFrog | Mercenaries: Playground of Destruction | Action Adventure | PS2 | T, O | Improvement | 1.0 | 03 Sep 2020 |
| 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 |
| All Night Nippon Super Mario Bros. Classic | Hacker65xx | All Night Nippon Super Mario Bros. | Action > Platformer | FDS | G | Improvement | 1.0 | 16 Apr 2022 |
| All Night Nippon 2 Super Mario Bros. | teeporage777 | Super Mario Bros. | Action > Platformer | NES | G, L | Complete | 1.0 | 16 Dec 2017 |
| All Multiplayer Maps Early | OEA | LEGO Battles | Strategy | NDS | O | Improvement | 1.0 | 22 Apr 2022 |
| All Items Avaible to Buy on Item Shop From the Start | CopyistMonk | Mega Man & Bass | Action > Platformer | GBA | GP, O | Improvement | 1.1 | 08 Feb 2023 |
| All Elite Wrestling 2020 | pacnsacdave | Pro Wrestling | Sports | NES | G, S, T, GP, O | Complete | 1.0 | 26 Apr 2020 |
| All Elite Wrestling | pacnsacdave | Pro Wrestling | Sports | NES | G, T, O | Complete | 1.0 | 17 Sep 2019 |
| ALL DAY NIPPON | POLARIA POYON | Super Mario Bros. | Action > Platformer | NES | G, S, L, T, GP | Complete | 1.1 | 03 Sep 2022 |
| All bosses in the same battle | elDexter | Paper Mario | Role Playing > Action RPG | N64 | L | Addendum | 1.0.1 | 26 Dec 2021 |
| Alisa’s Quest + | Gabriel Dinu | Super Mario Bros. | Action > Platformer | NES | G, S, L, T | Complete | 3.0 | 30 Apr 2021 |
