I played with more complicated atmospheres today. I refuse to implement overly-fancy techniques just to get something that boils down to a gradient with a few subtleties. Come on now. Here's a shot from a sunset on a planet orbiting an O star:

I'm sure the math doesn't work out...you can complain about not using real scattering equations all day, but man, it sure would be pretty to see this in-game. Don't ever let the real math get in the way of beauty 😉