[sizzzzlerz]

Pretty realistic save for one nit-picky detail. The refraction of background scenery into the larger raindrops doesn't change from the top of the window to where the drop falls off at the bottom. Yes, I know that would take an insane amount of computation for every drop but it would be cool.

[jayd16]

I worked on a similar effect in a mobile VR game. Blade Runner: Revelations on Daydream.

This vfx is actually pretty simple but quite satisfying. Having the drops refract based on look angle is what really pushes it over the edge.