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id Software's original 1997 DOOM source code, released under GPL v2, powering the classic demon-hunting FPS on the UAC's Mars facility.
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Original game imageGZDoom is a modder-friendly source port of the Doom engine covering Doom, Heretic, and Hexen, with OpenGL and Vulkan rendering support.
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A source port that reproduces the original DOS Doom, Heretic, Hexen, and Strife with their original bugs intact on modern systems.
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A free replacement for Doom's levels, art, sounds, and music, requiring a separate Doom source port to actually run it.
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Halted