Related, I usually hate CRT filters in game, the scan lines usually look too strong (and often the image is darkened inappropriately), but I really liked the one in Cyber Shadow. It just felt right.
I want to point out though that it's impossible for any CRT filter to have a peak brightness that's not significantly lower than without the filter, since it can darken pixels but not brighten them past what the maximum already is.
https://marcelwunderlich.com/using-phosphor-xscreensaver-for...