The X
extension name file type Classification
DA4 AGT Game Data File game files
DA5 AGT Game Data File game files
DA6 AGT Game Data File game files
DAM DAME Project game files
DAT Minecraft Data File game files
DAT SimCity 4 Game Data File game files
DAT_MCR Minecraft Level.dat Backup File game files
DAT_NEW Minecraft World Level File game files
DAT_OLD Minecraft Level.dat Backup File game files
DAY Day of the Zombie Map File game files
DAZIP Dragon Age: Origins Game File game files
DB X-Ray Engine Database game files
DCT DeSmuME ROM Cheats File game files
DDB Command & Conquer: Renegade Data File game files
DDT Football Manager Keep Player Data File game files
DEC Magic: The Gathering Online Deck File game files
DEF M.U.G.E.N. Character Definition File game files
DEK Magic: The Gathering Deck File game files
DEK Yugioh Virtual Desktop Deck File game files
DEK LackeyCCG Card Deck File game files
DEM Video Game Demo File game files
DEMO Pokémon Type Wild Data File game files
DESC Battlefield 2 Map Description File game files
DFC DeSmuME Firmware Configuration File game files
DIF MAME CHD Diff File game files
DIVA Project DIVA Song File game files
DJA Dundjinni Module File game files
DL Zoo Tycoon 2 Data File game files
DLG Dialogue File game files
DM2 Quake 2 Demo File game files
DM3 Quake 3 Demo File game files
DMB BYOND Game Executable game files
DMO Cube 2: Sauerbraten Demo File game files
DMO Duke Nukem 3D Demo File game files
DMS Dream Maker Script game files
DM_68 Quake 3 Demo File game files
DM_82 Wolfenstein 1.00 Demo Movie File game files
DM_83 Wolfenstein 1.02 Demo Movie File game files
DM_84 Wolfenstein 2.06 Demo Movie File game files
DN1 Duke Nukem 1 Game Data File game files
DN2 Duke Nukem Episode 2 Game File game files
DN3 Duke Nukem Episode 3 Game File game files
DNF Duke Nukem Forever Map File game files
DNH Danmakufu Script game files
DNS Duke Nukem Forever Save File game files
DOL GameCube Executable File game files
DPF Dargon Package game files
DRM Deus Ex Data File game files
DS Furcadia DragonSpeak File game files
DSG Doom Saved Game game files