Omniscient

Omniscient is a super simple Doom IWAD patcher, allowing you to patch/convert between most versions of every major IWAD. It’s written using native Win32, and supports all versions of Windows down to 98!. For non-Windows users, it also works perfectly under Wine.

To use this tool you must already legally own a copy of the game whose IWAD you wish to patch. If you are looking to acquire IWADs, then you can buy most of the supported commercial games from Steam or GOG.com.

Download

Older versions

  • v1.4.1 – released 27 April 2022 – 28.0 MB
  • v1.4.1 (ANSI) – for older systems where the regular Unicode version may not work
  • v1.4.0 – released 6 February 2022 – 28.0 MB
  • v1.4.0 (ANSI) – for older systems where the regular Unicode version may not work
  • v1.3.2 – released 29 December 2021 – 25.5 MB
  • v1.3.1 – released 29 December 2021 – 25.5 MB
  • v1.3.0 – released 23 December 2021 – 25.4 MB
  • v1.2.0 – released 15 December 2021 – 15.8 MB
  • v1.1.0 – released 1 March 2021 – 14.0 MB
  • v1.0.0 – released 17 November 2020 – 13.7 MB

Elsewhere

Credits

  • Written by me, of course.
  • Uses xdelta3 for compression, which is under the Apache License 2.0.
  • Some versions of IWADs were sourced from the Doom-Utils/iwad-patches repository

This program contains binary delta patches of content owned by:

  • Doom, Doom 2 – id Software / ZeniMax Media / Xbox Game Studios.
  • Heretic and Hexen – Raven Software / Activision.
  • Strife – Rogue Entertainment / Velocity Inc.
  • Hacx – Banjo Software.
  • Harmony – Thomas van der Velden.
  • Other games are property of their respective owners.

Omniscient was created in the interest of historical preservation, and to allow owners of older copies of games to use them with modern ports and mods. The program does not contain full data files, and requires an original data file to work.