1993 Doom gets ray tracing, for real

No joke, a modder has added full ray tracing support to the original Doom, and you can play through all of the first three episodes right now

Doom RTX released; mod bringing real-time ray tracing to the classic Doom game via the Vulkan API [UPDATE: Fake]

Can it run Doom” will never be the same, thanks to new ray-tracing mod

Original Doom On PC Now Has Raytracing Via New Mod

Experience Next-Gen Upgrades and New Content in Doom Eternal's Update 6 - Xbox Wire

The movie that reproduces how much the appearance of the game changes when ray tracing is enabled with the first DOOM is amazing - GIGAZINE

Doom (1993), now with ray tracing, Page 3

Fully Ray-Traced Quake 1 Looks Awesome in Motion

Doom (1993) - PCGamingWiki PCGW - bugs, fixes, crashes, mods, guides and improvements for every PC game

Doom reviews round up - all the scores

DOOM Classic Helmet Collector's Bundle Product Announcement

Brutal Doom mod dials up the original game's gore

Steam Community :: Guide :: How to play Ray Traced DOOM (PrBoom)

This Doom mod converts old sprites to 3D voxels