The first bolt to hit the ground = create a brilliant & blinding light. My first attempt at recursion. My code is fairly simple but ugly, if you wish, you may take look at it.
I tried to simulate lightning in slow motion. Real lightning in slow motion: http://28oa9i1t08037ue3m1l0i861.wpengine.netdna-cdn.com/wp-content/uploads/2014/10/slow-motion-lightning.gif