Media assets across the collections

Six Infocom titles carry media: the four V6 graphical games (Zork Zero, Arthur, Journey, Shogun) and the two with sampled sound (Sherlock on the Mac, The Lurking Horror on the PC).

These tables record which collections carry each title’s assets and which files those are, as measured on the cataloged media; the per-disc detail lives in each disc’s notes.

Graphics

File vocabulary:

• PC graphics are .CG1 (CGA, two-color), .EG1/.EG2 (EGA, split when the set exceeded a 360K floppy), .MG1 (MCGA)
• Mac graphics are PIC.DATA (black-and-white) and CPIC.DATA (color).

Every repeated file is byte-identical across the collections that carry it, verified by hash: Zork Zero’s four PC files across all four of its discs and its Mac pictures across both hybrids; Arthur’s and Journey’s complete Mac and PC sets between LTOI2 and Masterpieces; and Journey’s Mac PIC.DATA a third time in the leaked journey repository, where journey.bwmac.1 is the same 473,730 bytes exactly.

Across renditions, though, nothing is interchangeable: the libraries are sibling compositions, not conversions of one another. Every title’s picture count differs per rendition (Arthur’s four libraries hold 168, 169, 170 and 171 images; Shogun’s Mac pair hold 48 to the PC’s 50), the drawn geometry differs with the display standard, and each library pairs with its own platform’s story release - all four titles ship different Mac and PC story builds.

What the gaps mean:

• Zork Zero’s .MG1 is the one genuinely missing file - absent from every disc here, though the complete set is only three files (its EGA never needed an .EG2). LTOI1 dropped it in 1992, and every later disc inherited the gap.
  • The IF Archive’s zorkzero.mg1 is the genuine Infocom file: byte-identical to the copy on the retail 3.5” diskettes - shipped retail, dropped by LTOI1, restored to the archive from a retail copy in 1994. The full provenance trail, physical media included, is in the floppy entry.
  • It cannot be a conversion: its 503 images include the twenty r393-only pictures that exist in no Amiga or Mac rendition. (The archive labels its one real conversion as such: Jokisch’s beyondzo.mg1.)
  • It is the extreme case of the rendition split above: the Mac library is the 483-image r296-era layout whose borders are full 320x200 frames, the MG1 the 503-image r393 banner-plus-columns cut.
• Shogun’s three files are its complete PC set (its fifty EGA pictures fit one file), and its graphics survive only on LTOI2 among the discs - Masterpieces dropped the title. The leaked shogun repository carries Mac and Apple II picture files (a5.mac.1, a5.bwmac.1, a5.apple.1) at sizes close to but not equal to LTOI2’s, consistent with its later r322-era snapshot against the disc’s r292-era Mac release.
• Arthur’s EGA files exist only because a CD wanted them: the original floppy release shipped MG1, CG1 and the FILECVT.EXE converter instead of EGA art; LTOI2’s mastering pregenerated EG1/EG2 in October 1992 and every later appearance inherits them. See the LTOI2 notes.
• The leaked repositories otherwise carry no PC graphics libraries at all - for Zork Zero only the picture-manifest sources (zork0.zpic, a text file of picture names; zork0.pic, its offset table), which is consistent with the art being drawn on the Amiga and converted elsewhere.

Sound

In both games the sampled sounds start at number 3, because the Z-machine reserves 1 and 2 for its two interpreter-generated tones - the high and low bleep, which need no sample file and work on every interpreter - and both games’ sources name them the same way: S-BEEP and S-BOOP.

Sherlock

Sherlock’s sound numbers decode from the leaked repository twice over: the s3.nam-s17.nam files map each number to its sample, and sounds.zil carries Infocom’s own constant names and descriptions:

The S files are type SDAT, sound in the data fork: a 10-byte header, then unsigned 8-bit PCM. The four 32-byte M files are playback-parameter records, each ending in the ASCII name of the S file it plays - which is how sounds 11 and 13 exist without samples of their own: the one heart recording replayed at different rates.

The Lurking Horror

The Lurking Horror’s sounds decode from the leaked repository’s sounds.txt - Infocom’s own internal sound list, which records that two samples were “cut for reasons of space”, which is why the game has fourteen sounds and not sixteen. Every documented size matches the corresponding LURKINxx.SND in Masterpieces’ LHSOUND.ZIP (Jokisch’s 1995 conversions of the Amiga samples):

Measured against the leaked repository’s sources (2026-09-12): the disc samples are the same recordings converted from signed to unsigned 8-bit PCM - 99.4-99.5% byte-identical under a sign-bit flip, the remainder scattered single bytes at near-silence, a different processing generation of the same masters.

The Lurking Horror’s sound was native to the Amiga; no cataloged disc carries those samples, and the Masterpieces package is Stefan Jokisch’s 1995 freeware conversion kit, not Infocom’s - see the Masterpieces notes for its verification.