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Before diving into the different file formats this page will give a quick overview about files and which formats there are.


The game folder often only exposes a couple of files (usually bink video files), all the other files are located in the Bigfile.

File formats

.drmData RamSee Data Ram
.mulMultiplexStreamMusic, sound and cinematic container format
.rawRAW TextureRaw texture/image
.musMusic ScriptControls music flow
.samMusic SampleMusic samples
.idsIDMapKey-value file to lookup names from ids
.schSchemaFileStrings entry file (often subtitles)
.depUnknownSome build process file