| .N2E | NeocoreGames | Arquivos de jogos | The Incredible Adventures Of Van Helsing Effects | The Incredible Adventures of Van Helsing | NeocoreGames |
| .N2PK | NeocoreGames | Arquivos de jogos | The Incredible Adventures Of Van Helsing Game Data File | The Incredible Adventures of Van Helsing | NeocoreGames |
| .N64 | Unknown Developer | Arquivos de jogos | Nintendo 64 Emulator ROM File | Project64 | Open Source |
| .NAM | Aqua-3D | Arquivos de jogos | Aqua3D Network File | Aqua3D | Unknown Developer |
| .NAR | Nexon | Arquivos de jogos | Nexon Game Archive | Counter-Strike Online | Nexon |
| .NARC | Nintendo | Arquivos de jogos | Nintendo DS Archive File | MKDS Course Modifier | Gericom |
| .NAV | Valve | Arquivos de jogos | Id Tech 3 Bot Navigation File | Quake 3 Arena | id Software |
| .NAZ | Deadline Games | Arquivos de jogos | Total Overdose Game Data File | Deadline Games Total Overdose | Deadline Games |
| .NCF | Valve | Arquivos de jogos | No Cache File | GCFScape | Open Source |
| .NCP | Nikon | Arquivos de jogos | Nikon Camera Photo Settings | Nikon ViewNX | Nikon |
| .NDS | Nintendo | Arquivos de jogos | Nintendo DS Game ROM | No Cash GBA (No$GBA) | Martin Korth |
| .NEBULA | Sierra Entertainment | Arquivos de jogos | Nebula Data | Homeworld 2 | Sierra Entertainment |
| .NES | Nintendo | Arquivos de jogos | Nintendo (NES) ROM File | Jnes | Jabosoft |
| .NFG | Open Source | Arquivos de jogos | NewsBin Configuration File | DJI Interprises NewsBin Pro | Open Source |
| .NFO | Microsoft Corporation | Arquivos de jogos | System Information File | Microsoft System Information | Microsoft Corporation |
| .NFS | Codemasters | Arquivos de jogos | F1 2015 Speech Data | F1 2015 | Codemasters |
| .NFS13SAVE | Electronic Arts | Arquivos de jogos | Need For Speed: Most Wanted Saved Game Position | Need For Speed | Electronic Arts |
| .NGB | Alexander S. Meshcheryakov | Arquivos de jogos | Nonogram Puzzle Data | QNonograms | Alexander S. Meshcheryakov |
| .NGN | Terminal Reality | Arquivos de jogos | Fly! Engine Specification | Fly! | Terminal Reality |
| .NGP | Richard Bannister | Arquivos de jogos | Neo Geo Pocket ROM Image | Neopocott v0.5.2 | Richard Bannister |
| .NGS | 5pb. and Nitroplus | Arquivos de jogos | Steins;Gate Game File | Steins;Gate | 5pb. and Nitroplus |
| .NH | Interscape | Arquivos de jogos | NetHack Game Configuration File | NetHack | Interscape |
| .NIS | Sierra Entertainment | Arquivos de jogos | Homeworld Non-Interactive Sequence | Homeworld 2 | Sierra Entertainment |
| .NKM | Native Instruments | Arquivos de jogos | Kontakt Multi Instrument File | Native Instruments Kontakt | Native Instruments |
| .NLB | Oracle Corporation | Arquivos de jogos | Oracle Locale Builder Binary File | Oracle Locale Builder | Oracle Corporation |
| .NLTRACK | Mad Data | Arquivos de jogos | NoLimits Roller Coaster Track File | NoLimits | Mad Data |
| .NML | Native Instruments | Arquivos de jogos | Traktor Collection File | Traktor | Native Instruments |
| .NMM | Microsoft Corporation | Arquivos de jogos | Microsoft 3D Movie Maker Recorded Video | 3D Movie Maker | Microsoft Corporation |
| .NOB | Infogrames | Arquivos de jogos | Silver Game Data | Silver | Infogrames |
| .NON | Totally Games | Arquivos de jogos | Star Wars: Tie Fighter Mouse Options File | Star Wars: TIE Fighter | LucasArts Entertainment Company, LLC |
| .NPA | 5pb. and Nitroplus | Arquivos de jogos | Steins;Gate Archive File | Steins;Gate | 5pb. and Nitroplus |
| .NPC | Nikon | Arquivos de jogos | Picture Control Utility Picture Control File | Picture Control Utility | Nikon |
| .NS1 | Open Source | Arquivos de jogos | Nestopia Save State | Nestopia | Open Source |
| .NSM | Unknown Developer | Arquivos de jogos | NESticle Movie | Unknown Software | Unknown Developer |
| .NSS | Perion Network Ltd | Arquivos de jogos | Magentic Screensaver File | IncrediMail | Perion Network Ltd |
| .NTL | Blizzard Entertainment Inc. | Arquivos de jogos | Diablo 2 Mod D2NT Script | Diablo II | Blizzard Entertainment Inc. |
| .NTRK | Ubisoft | Arquivos de jogos | Pacific FIghters Online Track File | Pacific Fighters | Ubisoft Blue Byte |
| .NUT | Open Source | Arquivos de jogos | NUT Video File | MPlayer | The MPlayer Team |
| .NV | Q.W.Page Associates Inc | Arquivos de jogos | NewViews Database File | Q.W. Page NewViews 2 | Q.W.Page Associates Inc |
| .NVT | Neuralynx | Arquivos de jogos | NeuraLynx Video Tracker Data | Video Tracker File Playback | Neuralynx |
| .NWX | LucasArts Entertainment Company, LLC | Arquivos de jogos | Outlaws Choreography File | Outlaws | LucasArts Entertainment Company, LLC |
| .NX | Nexon | Arquivos de jogos | MapleStory NX Package | MapleStroy | Nexon |
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