All of them, at the end of the day, rely on free spins to give you real thrills, because you make Zeus a sticky wild reel 3 and a multiplier that increases every 2 rotations.
This means that you have a 6x multiplier in the last 2 rotations, so you can expect to get more than 80 times the bet in more than one time. Like the thunder and lights he controls, the king of the Olympus gods creates more noise than any real drama.