Oh I was confused for a second. So there is a Doom RPG (official one), and also a fan made "DRL" (totally not meaning DoomRL in the early days), which was event

Oh I was confused for a second. So there is a Doom RPG (official one), and also a fan made "DRL" (totally not meaning DoomRL in the early days), which was eventually remade as Jupiter Hell due to trademark issues.