Contagium
Savant
Forgot the name of it, but some pen and paper RPG is referenced over and over again in POE2. Now that I think of it, may have been more of a strategy board game, but the inhabitants took it pretty seriously
Doom 3 also has Super Turbo Turkey Puncher:Audio logs in Doom 3 reference PnP RPG games.
Audio logs in Doom 3 reference PnP RPG games.