MoPaQ

The MoPaQ format (.MPQ) files are proprietary game containers used by Blizzard Entertainment for their games including Warcraft 3 and World of Warcraft. They are used to contain many of the game assets that are needed by the game at runtime.

Links

 * http://www.zezula.net/en/mpq/mpqformat.html
 * The MoPaQ Archive Format v1.0
 * https://wowdev.wiki/MPQ
 * MPQ (file format)