ZDoom is a Windows program that provides instruments for modifying the source code of legacy computer games based on the Doom 3D engine to be compatible with relatively modern graphics cards and processors. It is important to mention that ZDoom is discontinued and does not support OpenGL rendering tools. Users can download GZDoom to access this functionality.

Modification instructions

You are prompted to unpack the contents of the downloaded archive to the main game folder. There is support for Doom, Hexen, Heretic, Strife and multiple other classic titles that are based on the Doom 3D engine.

After extracting the package to the correct location users can run the executable file to process original WAD files. It is possible to create backup copies of input items during the conversion.

Game settings

Flexible graphics parameters are provided. You are able to change the resolution, aspect ratio and visual quality. Moreover, instruments for toggling shaders and configuring dynamic lighting properties are included.

Users can remap control buttons to better fit their playstyle. The volume levels of the background music and sound effects are adjustable.

Features

free to download and use;
allows you to edit internal files in Doom and other similar games to improve compatibility with modern computers;
there are multiple visual settings like the output resolution and aspect ratio;
users can customize the default control scheme;
compatible with all modern versions of Windows.