| A Super Mario Thing | Talkhaus | Super Mario World | Action > Platformer | SNES | G, S, L, T, GP, O | Complete | 1.1 | 08 May 2012 |
| A Very Super Mario World | SchwerMuta | Super Mario World | Action > Platformer | SNES | G, S, L, T, GP, O | Complete | 1.0 | 04 Aug 2015 |
| Abadox - The Deadly Inner War - Color hack. | wolfamancer97 | Abadox: The Deadly Inner War | Action > Shooter | NES | G, T, O | Complete | 1.0 | 20 Oct 2020 |
| Abu Travels in Agrabah | Mario Bendor | Aladdin | Action > Platformer | NES | G, S, GP | Complete | 1.0 | 27 Nov 2020 |
| Action 52 Atari 2600 Graphics Edition | nensondubois | Action 52 | Other | NES | G | Complete | 1.0 | 20 Apr 2020 |
| Addams Family Values - The Gauntlet | BillyTime! Games | Addams Family Values | Action Adventure | SNES | L, GP | Complete | 1.0a | 29 Mar 2020 |
| Addams Family Values Boss Rush | BillyTime! Games | Addams Family Values | Action Adventure | SNES | L, GP | Complete | 1.0 | 28 Dec 2019 |
| Adoventoro Tcheco | MacBee | Kero Kero Keroppi no Daibouken 2: Donuts Ike ha Oosawagi! | Action > Platformer | NES | G, L, T | Complete | 1.0 | 21 Jul 2007 |
| Advance Wars Returns | ViviTheBlossom | Advance Wars 2: Black Hole Rising | Strategy > Turn Based | GBA | L, T, GP | Complete | 3.3 | 17 Jul 2021 |
| Advance Wars Story | PlatinumSkink | Advance Wars 2: Black Hole Rising | Strategy > Turn Based | GBA | L, T, GP | Complete | 1.81 | 05 Aug 2022 |
| Adventure Island 3 - Googie Edition | Googie | Adventure Island III | Action > Platformer | NES | G, L, T | Complete | 1.0 | 14 Apr 2017 |
| Adventure Island 3 Danger's Edition | DANGER X | Adventure Island III | Action > Platformer | NES | L, T, GP | Complete | 1.1 | 21 Jun 2015 |
| Adventure Island 3: The Lost Isles | Aether Knight | Adventure Island III | Action > Platformer | NES | L | Complete | 1.0 | 23 Mar 2008 |
| Adventures of Lolo Remix | Jp32 | Adventures of Lolo 2 | Puzzle | NES | L | Complete | 2.0 | 11 Jul 2007 |
| Adventures of Lolo: Mystical Forest | DragonEye Studios | Adventures of Lolo | Puzzle | NES | G, S, L, T | Complete | 0.4 | 22 Jul 2002 |
| Aeron's Golden Cookie Quest | Anorakun | Super Mario World | Action > Platformer | SNES | G, S, L, T, GP, O | Complete | 2.5.2.1 | 24 Aug 2022 |
| AFF Challenge | L.Soft Hacks | Mega Man | Action > Platformer | NES | G, S, L, T, GP | Complete | 1.5 | 12 Jun 2007 |
| After World 8 | insectduel | Super Mario Bros. | Action > Platformer | NES | G, L, T | Complete | 1.0 | 11 Feb 2006 |
| Air Fortress 2 | S. K. Dumbbus | Choujikuu Yousai: Macross | Action > Shooter | NES | G, T, GP, O | Complete | 1.0 | 17 Apr 2017 |
| Airbourne Hound | forgotusername | Balloon Fight | Action | NES | G, S, GP | Complete | 1.0 | 01 Apr 2022 |
