Basically a solid block that's hidden unless lit by a spectral light. Mostly to use as invisible barriers to prevent players from going somewhere they're not supposed to be.
I've been trying to prevent softlocks from the Sailcloth in my level that has multiple levels in a room. It's been a pain blocking off everything without the the room being filled with flying objects. Would love to have an invisible option to help keep players from soft locking and sequence breaking without cluttering the screen.
Though, Invisible mazes are pain