Thor’s hammer is the wild symbol, it can land on all the reels and it will substitute for all of the other symbols, except for the scatter symbol, to help and form winning combinations.
The scatter symbol is Yggdrasil, the tree of life.
The Lightning Feature may trigger on any spin. On the first spin, you will see that a number of the positions on the reels are frozen in blocks of ice and there are 45 ways to win. However, each consecutive win will unlock more symbol positions and increase the number of ways to win. This means the second spin may have 135 ways to win, the third could have 405 ways to win, the fourth could have 675 ways to win, the fifth could have 1,125 ways to win and the sixth could have a massive 3,125 ways to win. You can also climb a level by landing two scatter symbols.
If you land three, four or five Yggdrasil scatter symbols anywhere on the reels, you will win 8, 20 or 50 free spins respectively. During the free spins, landing two more scatter symbols will award an additional two free spins and unlock more ways to win. Furthermore, the number of ways to win can only increase, which means that it is easier to reach 3,125 ways to win (i.e. you will not drop down a level for failing to land a win). When the spins end, the expanded reels will be carried back to the main game and best of all, you can retrigger the free spins indefinitely.
Ways of Thunder is linked to two progressive jackpots and the jackpot game can be triggered by any spin, regardless of what symbols land or what you are betting. The jackpots up for grabs are the Ultimate Jackpot and the Extra Jackpot. The Extra Jackpot will be won before the amount shown, and the Ultimate Jackpot is the larger of the two and it can be won at any time.
In addition to the progressive jackpots, Thor offers the top payout of 160x for landing five across the reels. The green snake can payout up to 100x, the dragon head up to 40x, the rams heads up to 32x, and the ravens up to 32x. The blue rune can payout up to 20x, the purple and green runes can both payout up to 16x, and the red and yellow runes can payout up to 10x.