The great blue is my slot. This is the first game I added to Free Slots 24/7 inventory because it is my favorite game. But there is a warning: it has become a cult game, but it is extremely unstable. Only Playtech's Iron Man 2 slot can approach Great Blue in terms of volatility, so if you really put it in the real place, please respect it.
The reason why the Great Blue slot has become a fanatic is because of the high multiplier potential in free spins and the fact that it superimposes wild on all reels. Free games (2x, 7x, 10x or 15x) get 15x multipliers and you get 8 to 33 free spins. The higher the multiplier, the less the rotation usually, but the minimum you get is 8, which is rare. If you only get 2 times the multiplier, it is usually 15 - 23, using 7x or 10 multipliers, 25 - 33. In addition, they can be retriggered.