Psy Doom is a reverse-engineered port of the original PlayStation version of Doom, developed by BodbDearg and hosted as an open source project. Rather than adapting the PC release, it targets the PlayStation original specifically, aiming to recreate its distinctive renderer, audio, and gameplay feel on modern hardware.
The project is actively maintained, with recent commits continuing to refine the codebase. It represents one of the more dedicated efforts to preserve the PlayStation Doom experience outside of original hardware.