Doom PDF is Doom in a PDF, of course
Briefly

"Doom PDF only works in Chromium-based browsers (Chrome, Edge, Opera, etc.) and supports custom WADs (modded Doom files like the recent Gallery Experience), though you'll need the original Doom WAD to get them working."
"Previous interactive PDF projects I've seen use individual text fields that are toggled on/off to make individual pixels, however, Doom's resolution is 320x200, which would mean thousands of text fields would have to be toggled every frame, which is infeasible."
Read at Polygon
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