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emoose edited this page Feb 15, 2026 · 12 revisions

A collection of all sorts of relevant information regarding the setup, dependencies, environment, etc. of the game.

SDK

  • Psy-Q version 4.4.0, with some 4.3.0 / 4.3.1 libraries, based on SDK printver output: versions.txt

  • The Official Playstation Magazine Demo 16 (U)/OPM16 uses a previous version of the SDK.

  • Sony safechk.obj is used on certain releases to display a "console has been modified" error when a non-stealth modchip is installed (even on legit copies of the game!). Code for this is located inside HP_SAFE1 and S__SAFE2 overlay files that are encrypted and LZSS-compressed, with the two overlay files having very slight changes between them.

Libraries

  • Sound library libsd/libsmf: Supports custom Konami KDT1 MIDI files. This library was used for some PlayStation 1 and 2 Konami games with tweaks among each game. Additionally, Silent Hill 2's SOUNDCD.IRX and SOUNDHD.IRX files appear to be from the same library.

  • Math library: Contains custom sin/cos lookup-table implementation along with several RotMatrix functions.

  • Movie player MOVIESYS: Based on slightly customized Psy-Q SDK sample code and used across several Konami PSX titles, along with the non-playable SLED-01774 SH1 demo disc.

File Formats

Game uses a mixture of custom file formats and some PSY-Q/Sony proprietary formats, more information in File Formats document.

Game Builds

Silent Hill had several releases across different regions, some pre-release demos were also distributed to the public, along with prototypes and press builds that were later made available online.

All known releases are listed in the table below. The silentassets tool can extract data from each version included here.

There are also some unverified or undumped versions, such as the Hong Kong/Asia release seen in some collections. These are listed in the Unknown Releases section.

Known Releases

Note

This repo only targets the Silent Hill (U) v1.1 release, though other releases may provide insights into parts of the code or include code/data which may be useful for the decompilation.

Date (YY-MM-DD) Title Game/disc code Notes
Partial Demos
98-10-19 Official Playstation Magazine Demo 16 (U) SCUS-94278 WKS.XE/XAS.XE containers, Built with debug strings enabled.
98-11-06 Famitsuu Wave 2gatsu-gou Vol. 7 (J) SLPM-80366 WKS./XAS. containers.
98-11-06 Silent Hill Trial Version (J) SLPM-80363 AKA Silent Hill Taikenban.
98-12-09 Silent Hill Demo (G) SLED-01774 Demo video, only MOVIESYS/movie_main code.
98-12-16 Silent Hill Demo (E) SLED-01735 -
99-01-16 Silent Hill Demo CD (U) SLUS-90050 Built with debug strings enabled.
99-06-08 Playstation Zone CD Vol. 10 (G) SLED-02190 WKS./XAS. containers, later reissued as SCED-02420 & SCED-04082
99-06-16 Silent Hill Demo (E) SLED-02186 -
Prototypes
98-11-24 Silent Hill Preview (U) SLUS-45678 WKS. container, includes FILEINFO.H, volume dated 98-10-24? Built with debug strings enabled.
99-01-07 Silent Hill Review (U) SLUS-00707 WKS. container.
99-01-17 Silent Hill Trade Demo (U) SLUS-80707 Anti-modchip code inside KONAMI.BIN.
99-01-22 Silent Hill Beta (U) SLUS-00707 "Russian Bootleg", possibly scene pre-release.
Final Versions
99-01-26 Silent Hill (J) SLPM-86192 Rev 0, calls anti-modchip code inside HP_SAFE1/S__SAFE2 files.
99-02-10 Silent Hill (U) SLUS-00707 v1.1
99-06-02 Silent Hill (J) SLPM-86192 Rev 1, fixed Larval Stalker / Aglaophotis glitch.
99-06-07 Silent Hill (E) SLES-01514 -
99-06-16 Silent Hill (J) SLPM-86192 Rev 2 Konami the Best release. EXE matches Rev 1, but SILENT contents differ. Redump mentions "anti-modchip"?

Unknown Releases

  • Undumped HK/Asia Release: A SCPS-45380 disc for Hong Kong/Asia was also produced, but is currently listed online as undumped. Does the data match one of the JP versions, or was it a special release? Apparently was published by Sony rather than Konami (no Konami VX131-XX ID on disc), release date may have been around 1999-04.
  • NTSC Scene Releases: Earliest known scene release is Silent_Hill_USA_PAL_NTSC_Patch-PARADOX dated 1999-02-05, ~2 weeks after "Silent Hill Beta (U)", but 6 days prior to the creation of US v1.1. Could they have released a patch for the "beta" only 2 weeks after it was produced, or was this for an even earlier release?
  • NTSC-J Scene Releases: Earliest JP scene release is Silent_Hill_JAP_Final-DVNpSX dated 1999-05-01, one month prior to creation of JP Rev. 1. The group never used Final in any other releases, implying this was meant to replace an earlier non-final scene release, but at this point JP Rev. 0 was the only known JP release that would have been available. Was there an earlier release this was meant to replace?
  • Scene history for 1998 is very incomplete (dat listing sites only show 8 releases for the whole year). There could be other releases about which information is missing.

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