Before we dissect DIABDAT.MPQ , we must understand its container format. (short for "Mo'PaQ," named after a developer or simply "Mike O'Brien Pack" depending on the source) is a proprietary archive format created by Blizzard employee Jeff Strain.
What aspect of Diabdat.mpq or Diablo 1 would you like to explore further? Diablo 1 Diabdat.mpq
You have the shareware/demo version. The full game’s MPQ is 500MB+. The demo contains only the first two dungeon levels and limited sprites. Before we dissect DIABDAT
The backbone of the game’s logic. These files control: Before we dissect DIABDAT.MPQ
is the primary data archive for Diablo 1 (including Hellfire expansion, where it's often called hellfire.mpq or similar). MPQ stands for Mo'PaQ (created by Mike O'Brien), an archive format used extensively by Blizzard.