| Extension |
File Description |
|
Common? |
| .0 | M3 DS Real Save File | | No |
| .abk | Need for Speed Underground Audio | | No |
| .arc | African Safari Data File | | No |
| .arch00 | F.E.A.R. Game Archive | | No |
| .bic | Civilization 3 Scenario | | No |
| .big | Electronic Arts Game Data File | | No |
| .bik | Civilization 4 Video | | No |
| .bin | Sega Genesis Game ROM | | No |
| .biq | Civilization 3 Scenario | | No |
| .bix | Civilization 3 Scenario | | No |
| .blp | Blizzard Texture File | | No |
| .bmd | GameCube 3D Model File | | No |
| .bme | BeatMania 7-Key Song File | | No |
| .bms | BeatMania Song File | | No |
| .bsp | Valve Game Map File | | No |
| .cgf | Far Cry Model File | | No |
| .cgr | Audiosurf Data File | | No |
| .chk | StarCraft Chunk File | | No |
| .col | Grand Theft Auto Collision File | | No |
| .cty | SimCity City File | | No |
| .dem | Video Game Demo | | No |
| .dm2 | Quake 2 Demo File | | No |
| .dms | Dream Maker Script | | No |
| .dm_82 | Wolfenstein 1.00 Demo Movie File | | No |
| .dm_83 | Wolfenstein 1.02 Demo Movie File | | No |
| .dm_84 | Wolfenstein 2.06 Demo Movie File | | No |
| .dol | Gamecube Executable File | | No |
| .dxs | Deus Ex Saved Game | | No |
| .egm | Enigmo Custom Game File | | No |
| .elf | PlayStation 2 Game Data | | No |
| .eng | Chess Engine | | No |
| .erb | Evil Genius Resource File | | No |
| .esg | Enigmo Saved Game File | | No |
| .far | The Sims Archive File | | No |
| .ff | Call of Duty 4 Fast File | | No |
| .fml | WWE RAW Character File | | No |
| .fs2 | FreeSpace 2 Saved Mission File | | No |
| .fsm | FreeSpace Mission File | | No |
| .fst | Crazy Machines 2 Object File | | No |
| .gam | Saved Game File | | Yes |
| .gb | Game Boy ROM File | | No |
| .gba | Game Boy Advance ROM | | No |
| .gbc | Game Boy Color ROM | | No |
| .gcf | Game Cache File | | No |
| .grf | Ragnarok Client Archive | | No |
| .grp | StarCraft Graphics Group File | | No |
| .h3m | Heroes 3 Map File | | No |
| .h4r | Heroes of Might and Magic IV Data File | | No |
| .ham | Descent 2 Resource File | | No |
| .hit | The Sims Sound File | | No |
| .hog | Descent Mission File | | No |
| .hot | The Sims Sound File | | No |
| .hxm | Descent 2 Resource Modification | | No |
| .ibt | Texture and Model File | | No |
| .idx0 | Runescape Cache Index File | | No |
| .idx255 | Runescape Cache File | | No |
| .ips | Internal Patching System Patch File | | No |
| .isr | GoMoku Game File | | No |
| .ivt | International Volleyball 2006 Data File | | No |
| .iwd | Call of Duty Game Data File | | No |
| .j2i | Jazz 2 Internet Link File | | No |
| .j2l | Jazz Jackrabbit 2 Level File | | No |
| .jam | PS3 Unreal Tournament 3 Mod File | | No |
| .jg4 | BigJig Jigsaw Puzzle | | No |
| .kwreplay | Command & Conquer 3 Replay File | | No |
| .ldb | Max Payne Level File | | No |
| .lgp | Final Fantasy Media Archive | | No |
| .ll | List & Label Preview File | | No |
| .lmu | RPG Maker Map File | | No |
| .lsd | RPG Maker Game Save File | | No |
| .lsw | RPG Maker Saved Game File | | No |
| .luxb | Lux Map File | | No |
| .lvl | Game Level File | | No |
| .map | Half-Life Map File | | No |
| .max | Action Replay Max Save File | | No |
| .md2 | Quake 2 Player Model | | No |
| .md3 | Quake III 3D Model | | No |
| .mdl | Half-Life Model File | | No |
| .mgl | Age of Empires 2 Replay File | | No |
| .mgx | Age of Empires 2 Expansion Replay File | | No |
| .mgx | Rise of Nations Saved Game | | No |
| .mis | Saved Game Mission File | | No |
| .mis | Marble Blast Gold Mission File | | No |
| .mm6 | Might and Magic 6 Saved Game | | No |
| .mm7 | Might and Magic 7 Saved Game | | No |
| .mm8 | Might and Magic 8 Saved Game | | No |
| .mp2m | Max Payne 2 Mod File | | No |
| .mp2s | Max Payne 2 Saved Game | | No |
| .mpk | Project64 Memory Pack File | | No |
| .mpm | Max Payne Modfication File | | No |
| .mpq | Blizzard Mo'PaQ File | | No |
| .mps | Max Payne Saved Game | | No |
| .mrs | GunZ Game Data File | | No |
| .n3pmesh | Knight Online 3D Mesh File | | No |
| .n64 | Nintendo 64 Emulator ROM File | | No |
| .nav | Counter-Strike Bot Navigation File | | No |
| .ncf | No Cache File | | No |
| .nds | Nintendo DS Game ROM | | No |
| .nes | Nintendo (NES) ROM File | | Yes |
| .ngage | N-Gage Game File | | No |
| .nltrack | NoLimits Roller Coaster Track File | | No |
| .nup | Smart Security Update File | | No |
| .owc | OutWit Catch Database | | No |
| .p3t | PlayStation 2 Theme File | | No |
| .package | The Sims 2 Package File | | No |
| .pbp | PSP Firmware Update File | | No |
| .peg | Peggle Replay File | | No |
| .pig | Pirates of the Burning Sea Data File | | No |
| .pig | Descent Texture File | | No |
| .pk3 | Id Software Game Mod File | | No |
| .pln | Flight Simulator Flight Plan | | No |
| .pof | Descent Robot Definition File | | No |
| .pog | Descent 2 Texture Modification | | No |
| .ppf | PlayStation Patch Format File | | No |
| .pqhero | Puzzle Quest Saved Game | | No |
| .prx | PSP Plugin File | | No |
| .pss | Playstation 2 Game Video File | | No |
| .psv | Playstation 2 Save File | | No |
| .pwf | Counter-Strike PODBot Waypoint File | | No |
| .pxp | Counter-Strike PODBot Experience File | | No |
| .qwd | QuakeWorld Demo File | | No |
| .ras | Remedy Archive System File | | No |
| .rfm | rFactor Modification File | | No |
| .rgp | RealArcade Game Package | | No |
| .rom | N64 Game ROM File | | Yes |
| .rp2 | RetroPlatform Player Program Archive | | No |
| .rpl | Toribash Replay File | | No |
| .run | Rune Map File | | No |
| .rvproj | RPG Maker VX Project File | | No |
| .rxdata | RMXP Data File | | No |
| .sad | Black & White Audio File | | No |
| .sav | Saved Game | | Yes |
| .sc4 | Sim City 4 Saved File | | No |
| .scf | SimTown Sounds File | | No |
| .scm | StarCraft Map File | | No |
| .scn | SimCity Scenario File | | No |
| .scx | Game Scenario File | | No |
| .scx | Microsoft Game Scenario File | | No |
| .sdt | Grand Theft Auto III Audio File | | No |
| .sfd | Sofdec Dreamcast Movie | | No |
| .sfo | PSP Game Parameters File | | No |
| .sims2pack | Downloaded Sims 2 Package File | | No |
| .smc | Super Nintendo Game ROM | | No |
| .smd | Sega Mega Drive ROM | | No |
| .sms | Sega Master System ROM File | | No |
| .spr | Half-Life Sprite File | | No |
| .sprite | SuperTux Sprite File | | No |
| .sqm | Operation Flashpoint Mission File | | No |
| .srm | Super Nintendo ROM Save File | | No |
| .sub | SubTerra Level File | | No |
| .sud | Sudoku Puzzle File | | No |
| .sv5 | BigJig Saved Puzzle | | No |
| .sv6 | Rollercoaster Tycoon 2 Saved Game | | No |
| .svs | Game Boy Advance Saved State File | | No |
| .swc | Super Nintendo Wild Card ROM File | | No |
| .tbm | Toribash Weapons File | | No |
| .ted | Tribes 2 Game Data File | | No |
| .tim | The Incredible Machine Level | | No |
| .twt | Carmageddon 2 Data File | | No |
| .u | Unreal Tournament Class Package | | No |
| .uax | Unreal Audio Package | | No |
| .uc | UnrealScript Class | | No |
| .umod | Unreal Tournament Module File | | No |
| .umx | Unreal Music Package | | No |
| .unr | Unreal Level Map | | No |
| .uop | Ultima Online Patch File | | No |
| .usa | Unreal Saved Game File | | No |
| .usx | Unreal Static Meshes | | No |
| .ut2 | Unreal Tournament Map | | No |
| .ut2mod | Unreal Tournament 2003/2004 Module File | | No |
| .utc | Bioware Creature File | | No |
| .utx | Unreal Texture Package | | No |
| .uxx | Unreal Tournament Cache | | No |
| .v64 | Nintendo 64 ROM Dump | | No |
| .vb | Virtual Boy ROM File | | No |
| .vcm | Vice City Mod Manager File | | No |
| .vmf | Valve Map File | | No |
| .vol | Video Game Archive | | No |
| .vtf | Valve Texture File | | No |
| .w3g | Warcraft 3 Replay File | | No |
| .w3m | Warcraft III Map File | | No |
| .w3x | Warcraft III Expansion Map FIle | | No |
| .w3z | WarCraft III Saved Game File | | No |
| .wad | Wally Game Texture Archive | | No |
| .wagame | Worms Armageddon Game Recording | | No |
| .wal | Quake 2 Texture File | | No |
| .wbt | Toribash Help File | | No |
| .wim | Windows Imaging Format File | | No |
| .wtd | Grand Theft Auto IV Textures File | | No |
| .wtf | World of Warcraft Text File | | No |
| .wx | Flight Simulator Weather File | | No |
| .wz | MapleStory Game Data File | | No |
| .xbe | Xbox Executable File | | No |
| .xen | Guitar Hero III Data File | | No |
| .xex | Xbox 360 Executable File | | No |
| .xmb | Age of Empires Game Data File | | No |
| .xmb | X-Wing Mission Briefing File | | No |
| .xpd | PlayStation Store PSP License File | | No |
| .xpk | WWE RAW Model File | | No |
| .ycm | Yugioh Card Maker File | | No |
| .ydr | Yu-Gi-Oh! Power of Chaos Replay File | | No |
| .z64 | Nintendo 64 Game ROM | | No |
| .zds | GZDoom Save File | | No |
| .zmap | Zombies Ate My Neighbors Map File | | No |
| .zoo | Zoo Tycoon Saved Game | | No |
| .zsd | Dave Mirra Freestyle BMX Data | | No |
| .zst | ZSNES Save File | | No |
| .ztd | Zoo Tycoon Data Archive | | No |
