Version : 1.1 – Living blog – First version was 3 january 2013 This is the second post of a series about simulating rain and its effect on the world in game. As it is a pretty big post, I split it in two parts a and b: Water drop 1 – Observe rainy world Water drop 2a – Dynamic rain and its effects Water drop 2b – Dynamic rain and its effects Water drop 3a – Physically based wet surfaces Water drop