I think Chopley agrees with me in a way. I am saying they DO work like this:
Press=rng value+video = rng value. In other words, you press, instantly get a value for that stake and the second stage is a visual representation of reels equating to that rng value. It really is that simple. You don't even need a bloody set of reels for Christ's sake! You could just stake say 60p, and have a black screen in which a value then scrolls across or appears i.e. 0.00 press again 4.50 and so-on.
The reels/features/freespins are only there to alleviate the boredom in which you are really indulging - picking an electronic ball with a value from an electronic bag of balls. There would be no market for it without the enticement of videos. Reels are irrelevant on all online slots, and most mechanical ones. Anyone who think the reels all spin independently and randomly stop to make/not make a win is in need of serious psychiatric assistance. THE WIN IS ALREADY SELECTED BEFORE THE REELS EVEN MOVE!
I reiterate - you are selecting a random value when pressing start, which then triggers a reel video from a library of possibilities to give that specific award. Shitstorm on TSII is simply a different video which can EITHER pay a win value you could normally attain the same on the reels, OR one which is only possible via shitstorm.
Freespins are separate, but probably using a differently-spread pot of values from standard spins.
And yes, as Choppers says, without wishing to trigger a shitstorm of my own, the slots do have an element of compensatory algorithms. That's why players' variance levels out, and keeps players coming back.