Don't like how immaterial only says that the creature can't be targeted, but then you find out the hard way that it also doesn't get affected by global effects
I played this game in a dark room with my screen brightness maxed, and you still can't see much of anything. The coins are a bright yellow, the doors are green, and that room with the torches you can see stuff, but no walls or anything else are actually visible.
Cheers, thank you so much, and thanks for playing! :)