The video slot Thors Lightning from Red Tiger, has a seven reels, seven rows lay-out. Thors Lightning has 2 Free Spin features and there are 9 inactive tiles in the middle of the screen. You can unlock those tiles by winning clusters. The Thor symbol is important, if he appears the lightning removes all low valued symbols, and transform random icons in new ones or into Wilds. When you unlock the 9 tiles in the middle, you will get Valhalla Free Spins or Muspell Free Spins. In the Valhalla feature all the tiles are removed and Golden Shields will take their places. In the Muspell feature all low paying symbols will remove and high paying symbols will fall in. Meet Thor by playing this mythology game for free or with real money online. So try to win big prizes.