| Ninja Kid | aishsha | Action > Platformer | NES | Fully Playable | 1.0 | 21 Aug 2009 | EN |
| Ninja Kun: Majou no Bouken | pacnsacdave | Action > Platformer | NES | Fully Playable | 1.0 | 11 Jun 2014 | EN |
| Ninja Kun: Majou no Bouken | aishsha | Action > Platformer | NES | Fully Playable | 1.0 | 15 Aug 2018 | EN |
| Ninja Princess | goldenband | Action > Shooter | SG1K | Fully Playable | 1.0 | 03 Oct 2010 | EN |
| Ninja Rahoi! | Gaijin Productions | Role Playing | NES | Unfinished | 0.01 | 03 Dec 1998 | EN |
| Ninja Rahoi! | Stardust Crusaders, aishsha | Role Playing | NES | Fully Playable | 1.0 | 05 Aug 2014 | EN |
| Ninja Rahoi! | S. K. Dumbbus | Role Playing | NES | Addendum | 1.0 | 01 Jan 2017 | EN |
| Ninja-Kun: Ashura no Shou | The Spoony Bard | Action > Platformer | NES | Fully Playable | 1.0 | 02 May 1998 | EN |
| Ninja-Kun: Ashura no Shou | aishsha | Action > Platformer | NES | Fully Playable | 1.0 | 15 Aug 2018 | EN |
| Ninku | Some Good Shit Translations, EsperKnight | Action > Fighting | GG | Unfinished | 0.1 | 15 Apr 2001 | EN |
| Ninpen Manmaru | Ninpen Manmaru Project | Action > Platformer | SAT | Unfinished | 0.2 | 16 May 2001 | EN |
| Nintendo World Cup | Ghost-Tank | Sports | NES | Unfinished | 0.9 | 25 Sep 2016 | EN |
| Nishijin Pachinko 3 | MrRichard999 | Other | SNES | Fully Playable | 1.0 | 27 Dec 2018 | EN |
| Nishijin Pachinko Monogatari 2 | MrRichard999 | Other | SNES | Fully Playable | 1.0 | 11 Mar 2019 | EN |
| Nobunaga no Yabou: Game Boy Ban 2 | Opus | Strategy | GB | Unfinished | 2 Beta | 07 Feb 2001 | EN |
| Noobow | Stardust Crusaders | Action > Platformer | GB | Fully Playable | 1.0 | 24 May 2018 | EN |
| Nushi Tsuri Adventure: Kite no Bouken | JaytheHam | Role Playing | GB | Fully Playable | 2.0 | 28 Aug 2018 | EN |
| Nyorols | PentarouZero | Action | MSX | Fully Playable | 1.00 | 02 Oct 2004 | EN |
| Ogre Battle: The March of the Black Queen | FinS | Strategy > Turn Based | SNES | Fully Playable | 1.2 | 11 Sep 2018 | EN |
| Oishinbo: Kyukyoku no Menu 3bon Syoubu | snark | Adventure | NES | Fully Playable | 1.0 | 15 May 2008 | EN |
