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Doomsday of UAC

Doomsday of UAC running under Chocolate Doom
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For more information on this article, visit the Doomsday of UAC page on the Doom Wiki.

Doomsday of UAC (uac_dead.wad) is a classic and well-known WAD file for Doom 1. It does not play properly under Ultimate Doom and most ports due to a change in the behavior of sector tag 666 between versions. Chocolate Doom allows uac_dead.wad to be played by emulating the older version.

Instructions:

  1. Download a copy of UAC_DEAD from idgames.
  2. Extract the file from the .zip archive.
  3. Run with the following command-line arguments:
chocolate-doom -file uac_dead.wad -gameversion 1.9 -warp 1 8