Doom (1993) in a PDF file
Why the open web links it
A Doom source port that runs inside a PDF file, demonstrating the power of PDF's JavaScript capabilities.
Linked by 9 independent sites, 2 of them widely read in the 2026-10 crawl of the open web, including iphones.ru, 80.lv, gamergen.com, zeusnews.it, applespbevent.ru.