
?Q? – files that are compressed, often by the SQ program.A – An external file extension for C/C++.APK – Android package: Applications installable on Android package format of the Alpine Linux distribution.APPX – Microsoft Application Package (.appx).ARC – Nintendo U8 Archive (mostly Yaz0 compressed).ASS, SSA – ASS (also SSA): a subtitles file created by Aegisub, a video typesetting application (also a Halo game engine file).BA – BA: Scifer Archive (.ba), Scifer External Archive Type.BB – Is an 3D image file made with the application, Artlantis.
big – big: Special file compression format used by Electronic Arts to compress the data for many of EA's games. BIN – compressed archive, can be read and used by CD-ROMs and Java, extractable by 7-zip and WINRAR. bjsn – Used to store The Escapists saves on Android. bkf – Microsoft backup created by NTBackup.c. Blend – An external 3D file format used by the animation software, Blender. BMP – Bitmap Image – You can create one by right-clicking the home screen, next, click new, then, click Bitmap Image. cab – A cabinet (.cab) file is a library of compressed files stored as one file. Cabinet files are used to organize installation files that are copied to the user's system. cals – JEDMICS image files, a DOD system. xaml – Used in programs like Visual Studio to create exe files. clipflair.zip files – activities are also components and can be nested at any depth) clipflair.zip – ClipFlair Studio ClipFlair component saved state file (contains component options in XML, extra/attached files and nested components' state in child.
DAA – DAA: Closed-format, Windows-only compressed disk image.
DMG – an Apple compressed/encrypted format.
DDZ – a file which can only be used by the "daydreamer engine" created by "fever-dreamer", a program similar to RAGS, it's mainly used to make somewhat short games.