I just put together an interactive article about how we created the horror/DOOM aesthetic for our game Death's Clutch, if anyone is interested in a behind-the-scenes look!
Read it here: https://omarshehata.me/html/playcanvas-horror-aesthetic/
You can like scroll through and see how the game evolved over time, but you can also move the camera to see how the effects impact different parts of the scene. So it's like an interactive timelapse.
The game: