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Featuring custom maps, mods, and total conversions for the classic DOOM games in the WAD file format. A WAD can range from single-level maps to full campaigns, often incorporating new textures, enemies, and gameplay mechanics

Products that involve or comprise source code, including programming games; does not refer to products with their own source code available, open source or not.

Resources for building and relating to User Interfaces, how the user interacts with your program