A storyboard can help heighten tension and excitement during gameplay, and there's plenty to be seen here in Naxess' work. Among the extreme flashy lights and particles, you can also see a uniquely cool mouse-parallax effect that moves according to the hitobjects' intended trajectories as well. Just be sure to take your motion sickness pills!
I'm not really sure what to say, but those stars flying around was done because I thought the background was in space, but then I realized it's actually underwater LOL. But whatever works, I guess.