Quake .pak is the container file format for storing game assets in versions 1 and 2 of ID Tech game engine and some derivatives of it, including following games:
This file format is very simple. File starts with
PACK magic string (4 octets), then 4-byte offset to file table and 4-byte length (measured in bytes) of it.
File table consists of entries consisting of:
- file name, including path: 56-byte null-terminated string. No leading slash.
- file contents offset (from beginning of .pak file), 4 bytes
- file contents length
All numbers are little-endian.