List of filetypes

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Archives
Filetype Name System Notes
.rar Compressed Archive Use WinRAR or 7Zip to open and extract.
.7zip Compressed Archive Use WinRAR or 7Zip to open and extract.
.zip Compressed Archive Use WinRAR or 7Zip to open and extract.
.tar.gz Compressed Archive Use WinRAR or 7Zip to open and extract.
.001/.part1 Split Archive Use WinRAR or 7Zip to open and extract.
Disc Images
Filetype Name System Notes
.iso/.img Disk Image Multiple
.ccd CloneCD Control File Multiple Usually comes with .img files.
.bin Binary File Multiple Usually accompanied with, and used by, a cue sheet.
.cue Cue Sheet Multiple Metadata file for .bin/.iso/.img tracks.
.chd Compressed Hard Disk MAME/MESS
.mdf Media Descriptor File Multiple Disc image made from Alcohol 120%
.mds Media Descriptor Sheet Multiple Similar to .cue or .ccd, but for .mdf files.
.ecm Error Code Modeler PlayStation Compressed PS1 disc image, use UnECM to decompress it.
.cso Compressed ISO PlayStation Portable Compressed PSP disc image, use UMDGen to convert to and from .iso
.cdi/.gdi CD Image DreamCast Typically used with DreamCast, CDI is a compressed GDI
.sbI CD Image Sub-channel data. Generally used in the case of PS1 for Digital Restriction Management
Tape Files
Filetype Name System Notes
.wav Waveform Audio File Format Tape Based Systems Raw data in audio format†
.tap Tape File Tape Based Systems Raw tape data usable by appropriate emulators
.tzx ZX Spectrum Tape File Compatible Tape Based Systems (ZXS, CPC, C64, etc.) Prefered file type for all emulators, perfect representation
.cdc CPC Digital Tape Amstrad CPC Identical to the .tzx file but useable only by Amstrad CPC emulators
†When listened to, the file will play white noise. If this noise is perfectly recreated on to a tape, that tape should theoretically be able to be used on a system. In practice how ever, this is more difficult to do, as any interference can potentially ruin the tape.
ROMs
Filetype Name System Notes
.nes NES ROM NES
.fds Famicom Disk System NES
.smc Super Magicom SNES Headered ROMs dumped from a Super Magicom copier.
.sfc Super Famicom ROM SNES Headerless SNES ROM
.md Multi Game Doctor Genesis ROMs dumped from a Multi Game Doctor
.smd Super Magic Drive Genesis Headered ROMs dumped from a Super Magic Drive
.gen Genesis ROM Genesis Headerless Genesis ROM
.gg Game Gear ROM Game Gear
.z64 Zip Diskette N64 ROM Nintendo 64 Headered N64 ROMS dumped with a Mr. Backup Z64
.v64 Doctor V64 Nintendo 64 Headered N64 ROMS dumped with a Doctor V64
.n64 N64 ROM Nintendo 64
.gb GameBoy ROM GameBoy
.gbc GBC ROM GameBoy Color
.gba GBA ROM GameBoy Advance
.gcm GameCube Master Image GameCube GC disc dumped the way it's read
.gcz Compressed GameCube Disc Image GameCube Can be either a compressed .gcm or .iso
.nds NDS ROM Nintendo DS
.wbfs Wii Backup File System Wii Use WBFS Manager to convert to and from .iso
.wad Game Data File Wii/Doom Use for Wii channels and old FPS games
.ngp/.ngc NGP/C ROM Neo Geo Pocket/Color
.pce PC Engine ROM PC Engine
Saves
Filetype Name System Notes
.dsv DeSmuMe Save NDS
.ds1 to .ds9 DeSmuMe Save State NDS
.sav Save file Multiple
.ps2 PCSX2 Memory Card PS2
.mcr Memory Card Reader PS1 PS1 emulator memory card
.mpk Memory Pack Nintendo 64 N64 Saves
.eep EEPROM Nintendo 64 N64 Saves
.st0/.sta/ Savestate Multiple
.srm Save RAM SNES/Genesis Save RAM dump, used with emulators and flashcarts
Shaders and Filters
Filetype Name System Notes
.cg C for Graphics NVIDIA's shader format based on C's syntax.
.glsl OpenGL Shading Language / GLslang OpenGL only shader format based on C's syntax.
.hlsl High-level shader language Windows, Xbox, 360 Microsoft's proprietary DirectX only shader language, based on C's syntax.
Other
Filetype Name System Notes
.elf Executable and Linkable Format PS2/PS3/GC/Wii Typically a homebrew/small application file
.pbp Perl Builder File PlayStation Portable Game and homebrew eboot file
.dol Dolphin File GameCube/Wii Executable
.cfg/.ini Configuration File Multiple Use a text editor such as notepad/Notepad++ to edit
.dll Dynamic Link Library Multiple Typically used for plugins/emulation cores in emulators
.so Shared Library Multiple Typically used for plugins/emulation cores in emulators