Apparently there's an in-world advertisement for Beyond the Gates I stumbled upon after someone got me thinking about it again. It's worth watching as an homage to Nightmare alone.
EDIT: I also fixed the YouTube button to display URLs as videos (again). You need to use the actual page address (ex: https://www.youtube.com/watch?v=u1du4IVkO9A) not the short version (ex: https://youtu.be/u1du4IVkO9A). I can tweak that, but it has to be one or the other else we have to have two buttons for the same function.