Once the slots start spinning, the outcome cannot be foreseen. The winning combinations depends on the number of symbols, multiplied by the number of reels, to determine the variety of their positions. The movement of each spinner is independent from the others, therefore there is no winning until the spinning cycle stops. This means that the combination will be changing constantly, while the reels are spinning.
As you can see the game is quite challenging. You don’t need a lot of knowledge to play but having a strategy helps, that is why you must pay attention to the features. There’s no point to play a risky game like Vegas slots, if you can’t enjoy the gaming quality.