The total number of identical symbols on the screen determines the size of the winnings. After each spin, all winning combinations are paid out and removed from the reels. The remaining symbols are moved up and empty positions are filled with new symbols.
There are 5 multiplier zones in the slot. When the symbols located on them are part of a winning combination, multipliers are activated, which are applied to the winning combinations that activated them.
The possible values of the darkness multipliers are x1, x2, x3, x4, x5, x6, x7, x8, x9, x10, x12, x15 or x20. Each time a darkness multiplier is activated, it increases by the next step.
During each spin, before the symbols appear on the reels, there is a chance for each of the darkness multipliers to increase by 3 steps.
3 or more Scatter symbols during a single spin triggers Free Spins. A roll of 3 or more Scatter symbols during Free Spins awards additional spins. Free Spins start at 10 and have 5 extra spins for each Scatter symbol above 3 up to a maximum of 25 spins. Extra spins start from 10 and have 5 extra spins for each Scatter symbol above 3 up to a maximum of 25 spins.
During the free spins, a new Darkness multiplier appears on the middle reel. Its value is equal to the sum of the other 5 Darkness multipliers, it is activated and applied to winning combinations on top of it. All multipliers remain until the end of the feature.
If the maximum win in the game is reached, the feature ends.