There are also three helicopters, of which the Hulk hit one (which one you choose). This shows that your multiplier can be up to 5 times. If you are lucky, you will trigger the Hulk Rage feature, and all 7 police cars will be smashed - this will seriously increase your total number of wins.
The incredible Hulk logo is also important, and free gameplay can be launched anywhere on the reel - you will start with 10 free spins and use a 3x multiplier, which means all wins are tripled. The extended Hulk feature described below can also be triggered in this feature to further enhance your bonus. Finally, you can get more free spins, up to a maximum of 20. The Hulk symbol in the middle of the third reel (middle reel) is what you really want, as this will trigger the expansion of the Hulk function - this can happen in the base game and free game features.