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rcogfileexts.json
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rcogfileexts.json
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{".###": "Temporary file",
".$$$": "Temporary/backup file",
".!!!": "Temporary file",
".000": "Unspecified file",
".001": "Section 1 of a split file",
".002": "Section 2 of a split file",
".003": "Section 3 of a split file",
".016": "16-color image",
".123": "Lotus 1-2-3 document",
".16": "16-color image",
".256": "VGA color image",
".2d": "2D graphics image",
".2da": "2D array",
".2ds": "Unreal 3 2D shape data",
".3cn": "Windows 3D Movie Maker scene file",
".3d": "Generic 3D data file",
".3dcpack": "3DCoat package",
".3df": "Quickdraw 3D metafile",
".3dm": "Rhino 3D model",
".3dmf": "Quickdraw 3D metafile",
".3ds": "3DS Max model file (old) or Nintendo 3DS cart image",
".3dsx": "Nintendo 3DS homebrew application",
".3dw": "Leadwerks 3D world file",
".3g2": "3G2 mobile media container",
".3gp": "3GP mobile media container",
".3gp2": "3G2 mobile media container",
".3md": "3D manufacturing format file",
".3mm": "Windows 3D Movie Maker project file",
".3o": "Chasm: The Rift 3D object",
".4ds": "Illusion Softworks model file",
".555": "Black & White weather settings file",
".5ds": "Illusion Softworks model animation file",
".669": "Composer 669 tracker module",
".670": "Composer 670 tracker module",
".68k": "Motorola 68000 series code",
".7z": "7-zip file",
".7zip": "7-zip file",
".82p": "TI-82 program",
".83p": "TI-83 program",
".89y": "TI-89 data file",
".89k": "TI-89 program",
".89z": "TI-89 program",
".8ba": "Photoshop plug-in",
".8ck": "TI-84 Plus C Silver program",
".8xp": "TI-84 (Plus) program",
".8svx": "8-bit sampled voice file",
".a": "Static library file or Assembly source code",
".a26": "Atari 2600 ROM dump",
".a65": "6520 assembly source code",
".a78": "Atari 7800 ROM dump",
".a2w": "Alice (Java-based educational tool) world",
".a6p": "Adobe Authorware 6 package",
".a_t": "A-Train (DOS) game scenario/save file",
".aac": "Advanced Audio Coding audio file",
".aar": "Android archive",
".aaruf": "Aaru file archive",
".abc": "Lucasfilm Alembic model file",
".abk": "AMOS Bank (Data File)",
".acb": "ADX audio package file",
".accdb": "Access database",
".ace": "ACE data archive",
".acg": "GBA graphics file",
".acl": "GBA palette file",
".act": "Genesis3D actor file",
".adf": "Amiga floppy dump",
".adl": "Westwood Studios Ad-Lib sound file",
".adp": "Adaptive differential PCM audio file",
".adx": "Criware ADX audio file",
".aes": "Advanced Encryption Standard data file",
".afc": "Mass Effect 2/3 audio file",
".afs": "CriWare ADX sound package",
".afs2": "CriWare ADX sound package (newer version)",
".afpk": "Audio fingerprint file",
".agg": "Heroes of Might and Magic 2 aggregate file",
".ahx": "CRI MPEG audio",
".ai": "Adobe Illustrator file",
".aif": "Audio Interchange File Format",
".aifc": "Audio Interchange File Format (Compressed)",
".aiff": "Audio Interchange File Format",
".ain": "Source Engine AI nodegraph",
".air": "Adobe AIR package or M.U.G.E.N. animation file",
".alg": "Alambik Alamgram",
".all": "Visage format graphics image",
".als": "Alias PIX image file",
".amb": "Sonic 4 Episodes I and II data file",
".amos": "AMOS BASIC tokenized file",
".amr": "Adaptive Multi-Rate audio file",
".an4": "Driver: Parallel Lines animation file",
".an8": "Anim8or file",
".anb": "Genewars data file",
".ani": "Animation file (i.e. animated mouse cursors)",
".anim": "Animation file",
".anm": "Animation file",
".ans": "ANSII encoded file",
".aob": "GBA object file",
".aoe2campaign": "Age of Empires II HD campaign file",
".apng": "Animated Portable Network Graphics file",
".app": "Generic application (mostly likely either Mac or Wii)",
".applescript": "AppleScript script file",
".appx": "Universal Windows Platform app",
".apk": "Android package",
".apt": "Dungeon Keeper action point file",
".arc": "Generic archive",
".arch01": "F.E.A.R. 2: Project Origin data archive",
".are": "Bioware Aurora Engine area",
".arj": "Robert Jung archive",
".ark": "Generic archive",
".art": "Art archive (most likely Build)",
".as": "ActionScript language file",
".as4": "Electronic Arts music file",
".asc": "ASCII encoded file",
".asd": "Ableton sound data file",
".ase": "3D Studio Max ASCII scene export data",
".asf": "Advanced Systems format or Electronic Arts music file",
".asi": "Grand Theft Auto IV/I mod file",
".asm": "Assembly language file",
".aso": "ActionScript object file",
".asp": "Active Server page",
".aspx": "Active Server Extended page",
".asr": "Asura engine data file",
".ass": "Tom Clancy's Splinter Cell Blacklist data file",
".asset": "Unity assets file",
".assetbundle": "Unity asset bundle file",
".assets": "Unity assets file",
".asstrm": "Tom Clancy's Splinter Cell Blacklist data file",
".ast": "Nintendo GameCube/Wii sound file",
".ast_szg": "Syzygy (game) asset file",
".at3": "ATRAC3 sound file",
".at9": "ATRAC9 sound file",
".atr": "Atari floppy disk image",
".att": "Creatures 3/Docking Station attribute file",
".au": "Sun audio file",
".au3": "AutoIt source code",
".aubrey": "Omori obsfucated JSON file",
".aud": "Westwood audio file",
".audiopack": "God of War (2018) audio pack",
".aup": "Audacity project file",
".aux": "Frontier Developments audio file",
".avc": "Advanced Video Coding video file",
".avi": "Audio/Video Interleave video file",
".avif": "AV1 image file",
".awb": "CriWare ADX sound package",
".awd": "RenderWare Audio Wave Dictionary file",
".axf": "ARM RealView compiler object",
".axs": "Army Men: Sarge's Heroes object data",
".aya": "Battle Engine Aquila texture container",
".b3d": "Blitz3D model file",
".b3k": "BWTC32Key-compressed file",
".b5i": "BlindWrite 5 disc image",
".b64": "Base-64 encoded file",
".b6i": "BlindWrite 6 disc image",
".b6t": "BlindWrite 6 disc image file structure",
".ba2": "Bethesda archive (Fallout 4)",
".backup": "Generic back-up file",
".baf": "Bioware Infinity game engine script",
".bak": "Generic back-up file",
".bam": "Infinity Engine animated graphic",
".ban": "Oddworld: Abe's Oddysee graphics file",
".bank": "FMOD audio bank",
".bar": "BANG! Engine data file or Brew MP application resource",
".bas": "Basic source file",
".bat": "Batch file",
".bb": "BlitzBasic source file",
".bb2": "BlitzBasic source file",
".bba": "BlueByte Settlers data archive",
".bbdoc": "Buildbox project file",
".bbl": "RSD Game Maker (DOS) block patterns",
".bbm": "DeluxePaint Interleaved Bitmap",
".bbproject": "BBEdit project file",
".bbx": "Neverwinter Nights 2 billboard effect file",
".bcbnk": "Nintendo 3DS music instrument bank file",
".bcf": "The Sims (2000, PC) Binary-encoded character mesh file",
".bcgrp": "Nintendo 3DS group file",
".bch": "Nintendo 3DS texture file",
".bclim": "Nintendo 3DS image file",
".bcmdl": "Nintendo 3DS model file",
".bcres": "Nintendo 3DS resource file",
".bcsar": "Nintendo 3DS sound archive",
".bcseq": "Nintendo 3DS sequenced music file",
".bcstm": "Nintendo 3DS sound file",
".bcwar": "Nintendo 3DS wave archive",
".bcwav": "Nintendo 3DS wave file",
".bdae": "Gameloft data file",
".bdl": "Team17 Worms Revolution/Clan Wars bundle",
".bdt": "FromSoftware bundle table file",
".bds": "DX-Ball 2 boards file (pre-1.2.5)",
".bdz": "DX-Ball 2 (1.2.5 and newer)/Rival Ball boards file",
".bent": "Avalanche Software model container",
".bf": "Ubisoft Jade Engine or Cryo archive file",
".bfbnk": "Nintendo Wii U music instrument bank file",
".bfevfl": "Nintendo binary event flow file",
".bff": "Slightly Mad Studios archive file",
".bfgrp": "Nintendo Binary Cafe group file",
".bflim": "Nintendo Binary Cafe image file",
".bfm": "Bloodrayne model file",
".bfs": "BugBear game data file",
".bfseq": "Nintendo Binary Cafe sequenced music file",
".bfstm": "Nintendo Binary Cafe stream file",
".bfwar": "Nintendo Binary Cafe wave archive",
".bfwav": "Nintendo Binary Cafe wave file",
".bg3d": "Pangea Software 3D model file",
".bgi": "Borland Graphical Interface driver",
".bgv": "Burnout 3, Revenge, Dominator player vehicle file",
".bhd": "FromSoftware bundle data file",
".bic": "Neverwinter Nights character file or Civilization 3 scenario file",
".bif": "Bioware Infinity Engine resource file",
".big": "Electronic Arts file archive",
".bik": "Bink video file",
".bimage": "Doom 3 texture",
".bin": "Generic binary file",
".bin_0": "Unspecified binary file",
".bitsy": "Bitsy game engine source code",
".bk2": "Bink video file (version 2)",
".blb": "Blorb package file",
".bld": "SimCity 3000 or Yoot Tower building data",
".blend": "Blender 3D project file",
".blk": "Unspecified block data",
".bln": "Age of Empires II/Rise of Nations campaign media file",
".blo": "Nintendo menu graphics file",
".blorb": "Blorb package file",
".blp": "Blizzard texture or Blupi/Eggbert series game data file",
".bm1": "Bio Menace data file (Episode 1)",
".bm2": "Bio Menace data file (Episode 2)",
".bm3": "Bio Menace data file (Episode 3)",
".bmd": "Nintendo 3D model file",
".bme": "Be-Music Source file (7-key)",
".bmf": "The Sims (2000, PC) Binary-encoded deformable mesh file",
".bmg": "Nintendo game message file",
".bmp": "Bitmap file",
".bms": "Be-Music Source file or QuickBMS script",
".bmu": "Bioware Aurora Engine music unit",
".bmz": "Portal bonus map file",
".bndl": "Criterion Games bundle archive",
".bni": "MDK model file",
".bnk": "Unspecified bank file",
".bnr": "GameCube/Wii banner image file",
".bns": "Portal bonus description file",
".bntx": "Nintendo image data",
".bone": "World of Warcraft 3D model skeletal bone data",
".boo": "Sandlot Games data archive",
".bpg": "Better Portable Graphics image file",
".bps": "Binary patch file",
".br3": "Bryce 3 scene file",
".br4": "Bryce 4 scene file",
".br5": "Bryce 5 scene file",
".brep": "Boundary Representation file",
".breff": "Nintendo particle effect",
".breft": "Nintendo particle texture",
".brf": "Star Wars: X-Wing briefing file",
".brres": "Nintendo game 3D object",
".brsar": "Nintendo GameCube/Wii sound archive",
".brstm": "Nintendo GameCube/Wii sound file",
".bs": "Bioware Infinity Engine script",
".bs6": "Blake Stone: Aliens of Gold data file",
".bsa": "Bethesda Softworks archive",
".bsi": "Bethesda Texture/Graphic file",
".bsm": "Bioshock Map data file",
".bsp": "Binary Space Partitioning-based game map (i.e. idTech, GoldSrc, Genesis3D)",
".bti": "Nintendo texture data",
".btm": "4DOS Batch file",
".bun": "Bundle data file",
".btv": "Burnout 3, Revenge, Dominator traffic vehicle file",
".bundle": "Bundle data file (i.e. Criteron Games, Rust (game) or Payday 2)",
".bvh": "Biovision Hierarchy animation",
".bwav": "Nintendo Binary Wave file",
".bwi": "BlindWrite disc image",
".bwl": "HyperBowl data file",
".byml": "Binary YAML file",
".bz2": "BZip2 file archive",
".bzw": "BZFlag world file",
".c": "C source code",
".c16": "Creatures 3/Docking Station compressed image file",
".c3b": "Cocos2d model file",
".c3p": "Construct 3 project file",
".c3proj": "Construct 3 project file",
".c4d": "Cinema4D model file",
".cab": "Windows cabinet archive",
".cache": "Unspecified cache file",
".caf": "Core Audio file or CryEngine character animation",
".caff": "Core Audio file",
".cal": "CryEngine character animation list file",
".can": "Adrenix data file",
".cap": "Kingdom Hearts camera data",
".capx": "Construct 2 project file",
".car": "SAPCAR archive or Car (automobile) data",
".cas": "Frostbite general file or Total War model file",
".cat": "Generic archive file (catalog)",
".cbf": "Compressed bigfile",
".cbl": "Cobol source code or RSD Game Maker (DOS) character animation file",
".cbmd": "Nintendo 3DS 3D model file",
".cbt": "Ultima V combat map",
".cc": "Planet's Edge data file",
".cca": "Multimedia Fusion 1.x/Click and Create file",
".ccb": "CopperCube scene or 3DO image file",
".ccd": "CloneCD control file",
".cch": "Multimeda Fusion HTML5 application",
".cci": "Multimeda Fusion iOS application",
".ccj": "Multimeda Fusion Java application",
".ccl": "Intalk Communication/Concise Command Language file",
".ccm": "Multimeda Fusion Mac application",
".ccn": "Vitalize! project",
".cct": "Shockwave compiled cast file",
".cda": "CD audio data",
".cdg": "CD+Graphics data file or Nicky Boom data file",
".cdi": "DiscJuggler disc image file",
".cdr": "CD raw data or CorelDraw drawing",
".cel": "Animation cell data or Cool Edit audio loop",
".cer": "X.509 Certificate file",
".cfa": "Nintendo 3DS file archive",
".cfg": "Configuration file",
".cg": "NVidia CG source code file",
".cga": "Crytek Geometry animation file or computer graphics file",
".cgf": "Crytek Geometry file",
".cgfx": "Nintendo 3DS model file",
".cgi": "Common Gateway Interface script",
".cgn": "Strategic Command series campaign file",
".cgx": "Nintendo graphics tile set",
".cgz": "Linux driver file or Cube engine map file",
".ch8": "Chip-8 program",
".chd": "MAME Compressed Hard Disk image",
".chk": "Starcraft game map or file fragment",
".chm": "Compiled help file",
".chr": "Character (bitmap) file",
".cia": "Nintendo 3DS installable archive",
".cif": "Bethesda Compressed MultiImage file",
".cin": "Quake II video file",
".civ5map": "Civilization V map file",
".civ5save": "Civilization V save file",
".civ5sln": "Civilization V game data",
".civ6save": "Civilization VI save file",
".ck1": "Commander Keen data file (Episode 1)",
".ck2": "Commander Keen data file (Episode 2)",
".ck3": "Commander Keen data file (Episode 3)",
".ck4": "Commander Keen data file (Episode 4)",
".ck5": "Commander Keen data file (Episode 5)",
".ck6": "Commander Keen data file (Episode 6)",
".ckd": "UbiArt cooked asset file",
".cl": "Common Lisp or OpenCL source file",
".cl2": "Diablo cell data",
".class": "Java class file",
".clb": "Age of Wonders: Planetfall content library",
".clm": "Column file",
".cm2": "Poser camera",
".cmake": "CMake build-system generation file",
".cmata": "Nintendo 3DS material animation",
".cmb": "Legend of Zelda: OOT 3D model or Grand Theft Auto IV combat script",
".cmd": "CP/M executable or M.U.G.E.N. command/move definitions file",
".cmdl": "Nintendo 3DS model data",
".cmf": "Creative music format",
".cmo": "Compiled mesh output file or 3DVIA Virtools behavioral script",
".cmp": "Compressed or game campaign file",
".cmx": "The Sims (2000, PC) ASCII-encoded character mesh file or Corel Metafile Exchange Image",
".cmz": "Poser compressed camera",
".cnmt": "Nintendo Switch executable metadata",
".cns": "M.U.G.E.N. character states file",
".cnv": "Conversation file",
".cob": "Cobol source code or trueSpace 3D object",
".cod": "Blackberry executable or compiler output",
".coffee": "CoffeeScript language source code",
".col": "Color palette",
".com": "Command line executable",
".command": "Mac terminal shell script",
".comp": "GLSL compute shader",
".con": "Configuration file or Duke Nukem 3D script",
".conf": "Configuration file",
".config": "Configuration file",
".cos": "Creatures Object Source code",
".cp": "C++ source code or Adobe Captivate source code",
".cpgz": "Gzip compressed CPIO file",
".cpk": "Cinepak-compressed video or CriWare File Package",
".cpl": "Windows control panel",
".cpp": "C++ source code",
".cps": "The Powder Toy save file",
".cpt": "CompactPro archive",
".cptx": "Adobe Captivate project (newer)",
".cpx": "Genie Engine campaign file",
".cpy": "Cobol source code",
".cr2": "Poser figure",
".crf": "Dark Engine game archive",
".cro": "Nintendo 3DS relocatable object",
".crp": "Colossal raw asset package",
".crs": "Nintendo 3DS static relocatable object",
".crx": "Chrome browser extension",
".cry": "CryEngine map file",
".cryproj": "CryEngine project file",
".crypt": "Encrypted file",
".crysisjmsf": "Crysis (PC, 2007) save file",
".crysispsf": "Crysis Warhead (PC, 2008) save file",
".crz": "Poser compressed figure",
".cty": "SimCity (Original) city file",
".cwk": "Appleworks/Clarisworks file",
".cs": "C# source file or Torque engine script",
".csd": "CSound file",
".csl": "Unspecified scripting file",
".cso": "Compiled shader output file or Compressed ISO",
".css": "Cascading Style Sheet file",
".cst": "Shockwave cast file",
".csu": "Nintendo 3DS update file",
".csv": "Comma-separated values file",
".ctd": "Kingdom Hearts cutscene data",
".ctex": "Nintendo 3DS texture data",
".ctpx": "Nintendo 3DS texture package",
".ctr": "Nintendo 3DS 3D model",
".cue": "CD cue metadata file",
".cur": "Cursor image",
".cut": "Dr. Halo image",
".cxi": "Nintendo 3DS executable",
".cxt": "Shockwave read-only cast file",
".cxx": "C++ source code",
".cyr": "CryEngine game data",
".czt": "Czech language text (Unreal)",
".d2s": "Diablo II save file",
".d4c": "Driver: Parallel Lines texture file",
".d64": "Commodore 64 floppy or Nintendo 64DD disk image",
".d88": "PC-88 floppy disk image",
".d98": "PC-98 floppy disk image",
".dae": "COLLADA digital asset file",
".dat": "Generic data file",
".data": "Generic data file",
".dar": "Disk Archiver archive",
".db": "Generic database file",
".db0": "GSC Game World X-Ray engine data file",
".db1": "GSC Game World X-Ray engine data file",
".db2": "GSC Game World X-Ray engine data file or (newer) World of Warcraft client database file",
".db3": "GSC Game World X-Ray engine data file",
".db4": "GSC Game World X-Ray engine data file",
".dbc": "World of Warcraft client database file",
".dbf": "Unspecified database file",
".dbx": "Fire Emblem 9 scripting file",
".dc6": "Blizzard static image",
".dcp": "WinterMute Engine compiled project",
".dcr": "Shockwave/Director compiled project",
".dcu": "Disk Image Pro/Disk Copy Pro disk image",
".dds": "DirectDraw Surface",
".ddt": "BANG! Engine texture or Jill of the Jungle music file",
".ddv": "Oddworld Inhabitants video file",
".deb": "Debian software package",
".def": "Unspecified definition file",
".del": "Delimited ASCII or Delta-encoded file",
".dem": "Game demo file",
".det": "German language text (Unreal)",
".dex": "Android Dalvik executable",
".dff": "Renderware dynamic model",
".dg2": "Sega Digitizer 2 graphics file",
".dgc": "DCGA file archive",
".dge": "Dingoo executable",
".dgsl": "Visual Shader graph",
".dib": "Device Independent Bitmap file",
".dict": "Unspecified dictionary file",
".dif": "Dynamix/Torque interior file",
".diff": "Patch file",
".dim": "Disk image file",
".dir": "Shockwave/Director project file",
".diskcopy": "(Apple) DiskCopy 4.2 image file",
".diva": "Project DIVA dancebeat file",
".divx": "DivX media container file",
".djv": "DjVu scanned document",
".djvu": "DjVu scanned document",
".dlg": "Game dialogue file",
".dll": "Dynamically Linked Library",
".dls": "Downloadable sound file",
".dlt": "Stargunner archive file",
".dm": "BYOND Dream Maker code",
".dm_48": "Quake 3 demo (versions 1.27g to 1.27h)",
".dm_66": "Quake 3 demo (versions 1.27 to 1.30)",
".dm_67": "Quake 3 demo (versions 1.31)",
".dm_68": "Quake 3 demo (versions 1.32)",
".dm3": "Quake 3 demo (versions 1.11 to 1.17)",
".dma": "Renderware animation file or Jill of the Jungle file",
".dmb": "BYOND Dream Maker binary",
".dmd": "GameCube model file",
".dmg": "Apple disk image",
".dmm": "BYOND Dream Maker map",
".dmo": "Game demo file",
".dmp": "Core/Memory dump",
".dmx": "Valve 3D model",
".dn": "Adobe Dimension 3D scene file",
".dng": "Ultima IV dungeon map",
".do": "Apple II floppy image",
".doc": "Word Document",
".docm": "Word OpenXML Document (with macros)",
".docx": "Word OpenXML Document",
".dol": "GameCube/Wii Executable File",
".dpr": "Object Pascal/Delphi source code",
".dpx": "Digital Picture Exchange file",
".drs": "Genie Engine data resource file",
".drv": "Unspecified driver file",
".drx": "Shockwave/Director project file (for Macs)",
".ds2": "Digital Speech Standard Pro sound file",
".dsd": "Double-Sided floppy disk dump",
".dsk": "Unspecified disk image",
".dsm": "DirectShow Media file",
".dsmap": "Dungeon Siege map file",
".dso": "Dynamix/Torque encrypted script",
".dsp": "Digital sound file",
".dsres": "Dungeon Siege resource file",
".dsq": "Dynamix/Torque animation sequence file",
".dsym": "Debug symbols file",
".dta": "Game data file",
".dts": "Dynamix/Torque 3D model",
".dwg": "AutoCAD drawing database",
".dwi": "Dance With Intensity dancebeat file",
".dxf": "AutoCAD Drawing Exchange file",
".dxr": "Shockwave/Director project file (write-protected)",
".dxs": "Deus Ex save game file",
".dxt": "DXT Compressed Bitmap texture",
".dxt3": "S2TC Compressed Bitmap texture",
".dylib": "macOS dynamic library file",
".e": "Eiffel language source code",
".earc": "Final Fantasy XV archive file",
".ebx": "Frostbite asset node file",
".ecd": "RPG Maker DANTE98 II sprite/map graphics file",
".egd": "RPG Maker DANTE98 II enemy graphics file",
".ecm": "Error Code Modeler disc image",
".edat": "Encrypted Data",
".edml": "SoftImage Exporte 3D model file",
".eep": "EEPROM data",
".ees": "Empire Earth scenario",
".efi": "Extensible Firmware Interface file",
".eff": "Unspecified effect file",
".ega": "EGA graphics image",
".egg": "Panda3D model file",
".ehb": "Star Wars: X-Wing series encryption key for .tie file",
".ehm": "Star Wars: X-Wing series mission archive",
".eim": "Static EGA image (D / Generation)",
".elf": "Generic Unix Executable (Executable and Linkable Format)",
".emf": "Windows enhanced metafile",
".eml": "E-mail file",
".enc": "Generic encoded file",
".eng": "Chess Engine game file or English language localization file",
".ent": "CryEngine entity file",
".env": "Environment file",
".epf": "East Point Software archive",
".epk": "Metin2 data file",
".eps": "Encapsulated Postscript file",
".epub": "E-PUB e-book file",
".eqg": "Everquest game data file",
".erb": "Evil Genius Resource File or Ruby ERB script",
".erf": "Bioware entity resource file",
".erl": "Erlang source code",
".erp": "AGDS Engine file or Codemasters Ego Engine resource package",
".err": "Unspecified error log file",
".es": "ECMAScript source code",
".esd": "Kingdom Hearts enemy stage data",
".esl": "Creation Kit light master file",
".esm": "Creation Kit master file",
".esp": "Creation Kit project file",
".esq": "Yamaha e-SEQ music file",
".ess": "Elder Scrolls Oblivion/Skyrim save game",
".est": "Spanish language text (Unreal)",
".eu4": "Europa Universalis IV saved game",
".evt": "Windows event log file or other event file",
".evtx": "Windows event log file (newer)",
".ew": "Earthworm Jim: Special Edition (Windows 95) data file",
".exc": "Black & White level file",
".exe": "Executable File",
".exp": "FM-TownsOS app or Export Library file",
".exr": "OpenEXR HDR image file",
".exs": "Blades of Exile scenario file",
".ext": "Unspecified extension file",
".f": "Fortran source file",
".f77": "Fortran 77 source file",
".f90": "Fortran 90 source file",
".fat": "Ubisoft file indexing table",
".far": "The Sims (2000, PC) file archive",
".fbq": "Trine 2 data file",
".fbx": "Autodesk Filmbox 3D model",
".fc2": "Poser face pose",
".fchunk": "Driver: San Francisco file chunks",
".fdd": "Floppy disk image",
".fdi": "Floppy disk image (i.e. PC-9800 series)",
".fds": "Famicom Disk System floppy image",
".fel": "Monster Castle (1993, DOS) level file",
".ff": "Call of Duty FastFile or Jampack demo menu data file",
".ffl": "Aliens vs. Predator (1999) data file",
".fila": "Aleph One replay file",
".fish": "Wonder Boy: The Dragon's Trap music track",
".fla": "Adobe Flash/Animate project",
".flac": "Free Lossless Audio Codec audio file",
".flc": "FLIC animation",
".flh": "FLIC animation",
".fli": "FLIC animation",
".flif": "Free Lossless Image file",
".flr": "The Sims (2000, PC) floor file",
".flt": "OpenFlight/Ningen/Multigen/GameGen file",
".flv": "Flash video",
".flx": "Ultima VII/VIII/IX file archive",
".fm": "FileMaker database",
".fm2": "FCEUX movie recording",
".fm5": "FileMaker 5 database",
".fmeta": "Saber Interactive file metadata",
".fmf": "Football Manager compressed file",
".fmj": "FileMaker Pro database (in Japanese)",
".fmp": "FileMaker Pro database",
".fmp12": "FileMaker Pro 12+ database",
".fmz": "Phoenix Engine Ragdoll Bounding Volume",
".fnt": "Font file (usually bitmapped)",
".fnta": "Aleph One font file",
".foo": "Temporary file",
".for": "Fortran source file",
".forge": "Ubisoft Anvil/AnvilNext/Scimitar data archive",
".fos": "Fallout 3/New Vegas/4 save game",
".fp3": "FileMaker Pro 3+ database",
".fp5": "FileMaker Pro 5+ database",
".fp7": "FileMaker Pro 7+ database",
".fpk": "Civilization IV game data",
".frag": "GLSL fragment shader",
".frt": "French language text (Unreal)",
".fs": "Forth source file",
".fs2": "Freespace 2 mission data",
".fsb": "FMOD sound bank file",
".fsh": "OpenGL fragment shader or EA Sports image file",
".fst": "Crazy Machines 2 object file",
".fth": "Forth source file",
".ftm": "FamiTracker music file",
".fxg": "Flash XML graphics file",
".fxo": "DirectX pixel/vertex shader object",
".g00": "Siglus Engine image file",
".g01": "Siglus Engine image file",
".g2d": "Cossacks 1,2, and 3 graphics file",
".g64": "Commodore 64 disk image or Gameway 64 data file",
".gam": "Unspecified game file",
".game": "Unspecified game file",
".gameproj": "GameSalad project file",
".gar": "Grezzo archive",
".gas": "Monopoly Junior graphics file",
".gb": "Game Boy ROM file",
".gba": "Game Boy Advance ROM file",
".gbas": "GLBasic source code",
".gbc": "Game Boy Color ROM file",
".gbi": "gBurner disc image",
".gbx": "Nadeo GameBox engine file",
".gcd": "Fallout 2 character profile",
".gcf": "Valve grid/game cache file",
".gcp": "Blitz Games game data archive",
".gcz": "Konami graphics file (i.e. pop'n music) or zipped GameCube game",
".gdm": "Megazeux General DigiMusic file",
".gdi": "Dreamcast GD-ROM disc image file",
".gdv": "Gremlin Digital video file",
".ged": "Game Editor project file",
".gedt": "Game Editor tutorial file",
".gen": "Creatures game series genome file",
".geom": "GLSL geometry shader",
".gfa": "The Games Factory file",
".gff": "Bioware Generic File Format",
".gfx": "Unspecified graphics file",
".ggpack1": "Thimbleweed Park file archive",
".ggpack2": "Thimbleweed Park file archive",
".gib": "Jamagic 3D object file",
".gid": "Windows help indexing file",
".gif": "Graphics Interchange File",
".gim": "PSP & PS3 Texture/Sprites file",
".gjd": "Trilobyte game audio file",
".gka": "Rival Ball resources file",
".gla": "Ghoul Engine 3D animation file",
".glb": "Graphics Language Transmission Binary file",
".glm": "Ghoul Engine 3D mesh file",
".glsl": "OpenGL Shading Language source code",
".gltf": "Graphics Language Transmission ASCII/JSON file",
".gm": "GameMonkey script or General MIDI file",
".gm1": "Stronghold object data",
".gm6": "Game Maker 6 (Mark Overmars) project file",
".gma": "GameCube model archive",
".gmax": "Gmax mesh file",
".gmd": "Game Maker pre-version 6 (Mark Overmars) project file",
".gmf": "Leadwerks Game Model file",
".gmk": "Game Maker 7 (YoYo Games) data file",
".gml": "Game Maker (YoYo Games) language file",
".gmo": "PSP Model/Animation file",
".gmp": "Thief: Deadly Shadows unoptimized map file",
".gmx": "Game Maker (YoYo Games) project file",
".gmz": "Game Maker (YoYo Games) project file (zipped)",
".gnf": "PlayStation 4 texture file",
".gnt": "Micro Focus generated code file",
".go": "(Google) Go language source codde",
".gob": "Star Wars: Dark Forces data file",
".goo": "Alien Rampage archive file",
".gor": "Myth: The Fallen Lords data file",
".goz": "GoZBrush model transfer file",
".gpe": "GP2X video game",
".gpk": "Iron Sky: Invasion data package",
".gr": "Ultima IX graphics file",
".gr2": "Granny3D model file",
".gra": "Graph/Graphics file",
".gradle": "Gradle build script",
".grf": "Graphics resource file (i.e. Ragnarok, Rollercoaster Tycoon)",
".grn": "Granny3D model file",
".gro": "Serious Engine resources file",
".grp": "Data Archive (Group)",
".gsc": "Call of Duty game script or GSC Game World game file",
".gsd": "Kingdom Hearts gimmick stage data",
".gsproj": "GameSalad project file",
".gtex": "Granite SDK texture file",
".gtp": "Granite SDK texture package",
".gts": "Granite SDK tileset",
".gtworld": "Growtopia world file",
".gvm": "GameCube GVR archive",
".gvr": "GameCube texture",
".gxb": "GP32 executable",
".gxc": "GP32 executable encryption info",
".gxt": "PlayStation Vita texture file or Rockstar Games language file",
".gyb": "Swift language (Apple) GYB template file or Oksori Gayobang music file",
".gym": "Sega Genesis music rip",
".gz": "GNU Zip archive",
".gzip": "GNU Zip archive",
".gzp": "Giants: Citizen Kabuto archive",
".h": "C header file",
".h261": "H.261 video file",
".h263": "H.263 video file",
".h264": "H.264 video file",
".h4m": "GameCube movie file",
".h4r": "Heroes of Might and Magic IV data file",
".hag": "Microprose/Sanctuary Woods data archive",
".ham": "Descent 2 resource file",
".hal": "Mortyr game data archive",
".hca": "High Compression audio",
".hd2": "Poser hand pose",
".hdi": "PC-98 hard disk image",
".hdp": "Extended Range JPEG image",
".hdr": "High Dynamic Range image file",
".hdv": "Alambik Hyper-Digital Video",
".he": "Humongous Entertainment adventure game data file",
".he0": "Humongous Entertainment adventure game data file",
".he2": "Humongous Entertainment adventure game data file",
".he4": "Humongous Entertainment adventure game data file",
".heic": "High Efficiency image file",
".heif": "High Efficiency image file",
".hero": "Omori obsfucated YAML file",
".hevc": "High Efficiency video file",
".hex": "Generic hex(adecimal) file",
".hkcl": "Havok cloth physics file",
".hkm": "Havok movie file",
".hknm2": "Havok navigation mesh file",
".hkrb": "Havok rigid body physics file",
".hkrg": "Havok ragdoll physics file",
".hksc": "Havok static compound physics file",
".hktmrb": "Havok mesh rigid body physics file",
".hkx": "Havok packed file",
".hl2": "Half-Life 2 save game",
".hmd": "PlayStation hierarchical 3D model",
".hmi": "Human Machine Interfaces MIDI",
".hmp": "Human Machine Interfaces MIDI or Worms 3D/4 height map",
".hmm": "Heavy Metal Machine data file",
".hmn": "Cyro Interactive video file",
".hip": "Heavy Iron Studios package",
".hlp": "Windows Help document",
".hlsl": "Cg/HLSL source code",
".hog": "Descent data archive or Warthog Games file archive",
".hop": "Heavy Iron Studios package",
".hot": "The Sims (2000, PC) sound logic file",
".hpapp": "HP Prime calculator program",
".hpappnote": "HP Prime calculator program description",
".hpappprgm": "HP Prime calculator program code",
".hpk": "Haemimont Engine datapackage",
".hpp": "C++ header file",
".hpprgm": "HP Prime calculator User BASIC program",
".hqx": "Mac BinHex-encoded archive",
".hr2": "Poser hair pose",
".hrl": "Erlang source code",
".hrs": "Halls of the Dead data file",
".hs": "Haskell language source code",
".htm": "HTML webpage",
".html": "HTML webpage",
".huf": "Compressed file (using Huffman)",
".huff": "Compressed file (using Huffman)",
".hut": "Hungarian language text (Unreal)",
".hwd": "Hedgewars recorded demo",
".hwmap": "Hedgewars map file",
".hwp": "Hanword document",
".hws": "Hedgewars saved game",
".hx": "Haxe source code",
".hxml": "Haxe source code",
".hxx": "C++ header file",
".i": "Preprocessor output file",
".iam": "Urban Chaos map file",
".ibt": "Thief: Deadly Shadows optimized map file",
".ibk": "Musical instrument bank file",
".icn": "Icon image file",
".icns": "Icon image file",
".ico": "Icon image file",
".idx": "Unspecified indexing file",
".idsp": "Nintendo GameCube DSP audio file",
".iff": "Interchange File Format file",
".ifp": "Grant Theft Auto 3/Manhunt animation file",
".igl": "Igor: The Time Machine level file",
".igr": "Igor: The Time Machine recording file",
".ik": "CryEngine inverse kinematics file",
".ikm": "MiCROViSiON (Japanese game developer) audio container",
".im4p": "Apple IMG4 payload file",
".ima": "Disk Image File or unspecified (graphical) image",
".imc": "LucasArts sound data",
".imeta": "Saber Interactive IPAK metadata",
".imf": "iD software music file",
".img": "Generic Image File",
".imga": "Aleph One image file",
".ims": "LucasArts iMuse music container",
".imy": "iMelody music file",
".inc": "Include file",
".inf": "Setup information file",
".ino": "Arduino source file",
".int": "Intellivision ROM file or International English text (Unreal)",
".iobj": "Visual Studio intermediate object",
".iom": "Xenocracy IO map",
".ipa": "iOS App Store Package",
".ipak": "Saber Interactive texture package",
".ipbj": "Visual Studio internal compilation database",
".ipch": "IntelliSense precompiled header file",
".ipg": "Apple iPod game package (old)",
".ipk": "UbiArt engine archive file",
".ipl": "Grand Theft Auto III/Vice City item placement binary file",
".ipp": "C++ inline file",
".ips": "Internal Patching System patch file",
".ipynb": "Jupyter notebook",
".irarc": "IntiCreates archive file",
".irr": "Irrlicht 3D scene",
".irrmesh": "Irrlicht 3D mesh file",
".irx": "IOP Relocatable Executable (PlayStation 2)",
".is14": "ITU G.722.1 annex C audio file",
".is22": "ITU G.719 annex B audio file",
".isb": "Psychonauts sound archive",
".isc": "UbiArt engine scene file",
".isd": "IntiCreates sound data",
".iso": "ISO 9660 disc image",
".isu": "InstallShield uninstall script",
".isz": "Zipped ISO 9660 disc image",
".it": "ImpulseTracker music file",
".iti": "ImpulseTracker instrument file",
".itt": "Italian language text (Unreal)",
".its": "ImpulseTracker sample file",
".ivf": "Indeo video file",
".iwd": "Call of Duty data archive",
".iwi": "Infinity Ward engine graphics file",
".ixa": "Ulead disc image file",
".j": "Jamagic script file",
".j2a": "Jazz Jackrabbit 2 sprite archive",
".j2b": "Jazz Jackrabbit 2 music file",
".j2l": "Jazz Jackrabbit 2 level file",
".j2t": "Jazz Jackrabbit 2 tileset",
".j64": "Atari Jaguar ROM",
".jad": "Java application description",
".jag": "Atari Jaguar ROM",
".jakt": "Jakt source file",
".jam": "Pikmin 2 musical sequence file",
".jav": "Java source file",
".java": "Java source file",
".jar": "Java compressed archive",
".jas": "Cheetah3D model file",
".jbc": "Guimo (Jack-in-the-Box Computing) data archive",
".jcache": "Jagex data cache",
".jfl": "Traffic Giant (game) data file",
".jgd": "Industry Giant (game) data file",
".jks": "Java keystore file",
".jmp": "J3D model preset",
".jng": "JPEG Network Graphics image",
".jp2": "JPEG 2000 image",
".jpe": "JPEG Image",
".jpeg": "JPEG Image",
".jpg2": "JPEG 2000 image",
".jpg": "JPEG image",
".jpx": "JPEG 2000 image",
".jrz": "Unspecified PSP data file",
".js": "Javascript file",
".jsa": "JRun Server application",
".json": "Javascript Object Notation file",
".jsp": "RenderWare model file or Jamul sprite file",
".jsx": "Javascript XML file",
".jtd": "Ichitaro document",
".jv": "Z (Bitmap Brothers) video file",
".jv3": "TRS-80 floppy disk image",
".jxr": "Extended Range JPEG image",
".kar": "CyberStep archive file (i.e. CosmicBreak Universal)",
".kcl": "Nintendo collision file",
".kel": "Omori obsfucated JSON file",
".kext": "macOS kernel extension",
".key": "Bioware Infinity game resource file or unspecified key file",
".kf": "Gamebryo game file",
".kfm": "Gamebryo model file",
".kfs": "King's Bounty file archive",
".kld": "Dungeon Keeper 2 level logic",
".kms": "Kris' Music System file",
".ko": "Linux/FreeBSD kernel extension",
".kodu": "Kodu game format file",
".kot": "Korean language text (Unreal)",
".ksv": "Kheops Studio video file",
".ksy": "Kaitai Struct language source",
".kt": "Kotlin language source code",
".ktm": "Kotlin language module",
".kts": "Kotlin language script",
".ktsl2stbin": "Koei Tecmo sound archive",
".ktx": "Khronos texture file",
".kupack": "Pogostuck data archive",
".kvo": "Ken's Voxel Octree file",
".kvs": "Koei-Tecmo sound file",
".ksm": "Ken's Adlib music file",
".kwd": "KWord document or Dungeon Keeper 2 level layout",
".kwz": "Flipnote Studio 3D movei file",
".kxr": "CyberStep archive file (i.e. Onigiri)",
".kye": "Kye game file",
".kzp": "Ken's Labyrinth data file",
".l": "Lisp source code file",
".l3d": "Black & White graphics file",
".lab": "MoLiyo MindPower Engine skeletal animation",
".lang": "Language resource file (for localization)",
".lbm": "DeluxePaint Interleaved Bitmap",
".lbr": "CP-M/DOS file archive",
".lbv": "Visage format graphics image",
".lbx": "SimTex file archive",
".ldb": "Minecraft level file",
".ldbs": "LibDisk floppy disk image",
".lev": "Unspecified level file",
".lfd": "Lucasfilm data file",
".lfp": "Leapfrog packaged file",
".lfx": "Neverwinter Nights 2 line effect file",
".lgo": "Logo instructions file or MoLiyo MindPower Engine game geometry object",
".lgp": "Final Fantasy VII archive file",
".lgt": "Urban Chaos/Dungeon Keeper lighting file",
".lha": "LHA archive",
".lhs": "Haskell language source code",
".lhz": "Compressed file (using LHZ)",
".lib": "Static library file",
".lic": "Licensing Key file",
".lip": "Bohemia Interactive lipsync file",
".lis": "Program listing",
".lisp": "Lisp source file",
".list": "Listing file",
".ll": "Robot Battle load list",
".llm": "Linden Lab mesh file",
".lmo": "MoLiyo MindPower Engine game map object",
".lmp": "idTech 1/2 engine lump file",
".lmu": "RPG Maker 2000/2003 map file",
".lng": "Language resource file (for localization)",
".lnk": "File shortcut or Nioh 2 data archive",
".lnx": "Atari Lynx ROM file",
".loc_szg": "Syzygy (game) level file",
".lock": "OS Lock file",
".lod": "Heroes of Might and Magic III data file",
".lodpack": "God of War (2018) model pack",
".log": "Debug output log",
".loony": "Loonyland 2 save file",
".love": "LOVE 2D game engine file",
".lrz": "LZMA Rzip compressed file",
".lsd": "RPG Maker engine game save file",
".lsp": "Lisp source file",
".lst": "Listing file",
".lua": "Lua program file",
".luc": "Compiled Lua program file",
".luv": "Lightwave UV mapping file",
".luxb": "Lux Delux map file",
".lvl": "Unspecified level file",
".lvl_szg": "Syzygy (game) level file",
".lwo": "LightWave 3D object",
".lws": "LightWave 3D scene",
".lxo": "MoLiyo MindPower Engine login scene",
".lyx": "Atari Lynx ROM file",
".lz": "Compressed file (using LZ)",
".lz4": "LZ4 compressed file",
".lzma": "Compressed file (using LZMA)",
".lzh": "LHA archive",
".lzo": "Compressed file (using LZO)",
".lzs": "LZSS compressed file",
".lzss": "LZSS compressed file",
".lzw": "Compressed file (using LZW)",
".m": "Objective-C source file or Re-Volt world file",
".m2": "Blizzard 3D model file or Modula-2 source file",
".m1v": "MPEG-1 video",
".m3": "Starcraft II 3D model file",
".m3a": "Starcraft II model animation file",
".m3d": "American Conquest: Fight Back mission file",
".m3u": "Multimedia playlist",
".m4a": "Apple Lossless audio file",
".m4v": "MPEG-4 container",
".ma": "Maya ASCII project file",
".mad": "Madcow movie file",
".make": "Makefile script",
".manifest": "XML package content information",
".map": "Generic map file",
".maplet": "Maplet world file",
".masseffectsave": "Mass Effect saved game",
".mas": "ISI Gmotor engine data file",
".mat": "Generic texture material",
".max": "3DS Max model file",
".mb": "Maya binary file",
".mbk": "STOS memory bank",
".mbl": "RSD Game Maker (DOS) monster animation file",
".mbm": "Symbian MultiBitMap image file",
".mbnk": "Miles Sound System audio bank",
".mbs": "STOS memory bank",
".mca": "Minecraft 'Anvil' map file",
".mcd": "'X-COM: UFO Defense/UFO: Enemy Unknown' map control data",
".mch": "Robot Battle match file",
".mcr": "Minecraft region file",
".md": "Markdown file",
".md2": "Quake II 3D model",
".md3": "Quake III 3D model",
".md5": "MD5 checksum file or Doom 3 model",
".md5anim": "idTech 4 model animation",
".md5mesh": "idTech 4 model mesh",
".mdb": "Microsoft database or Bioware Aurora engine model file",
".mdf": "Media Descriptor disc image file",
".mdl": "Generic model file",