Enlarge / A seemingly lost turn-based version of Doom RPG is now fully playable on modern Windows PCs, thanks to efforts from the Doom reverse-engineering community. (credit: id Software) The creators of the Doom series have presented plenty of official and unofficial historical retrospectives, but these often leave out the weirdest official Doom game ever made: Doom RPG. Even id Software's official "Year of Doom" museum at E3 2019 left this 2005 game unchronicled.