Each spin begins with a 6-reel, 4-row layout. When a win occurs, the Expanding Reels feature is triggered. Each Avalanche adds one row to the top, up to a maximum of 4 extra rows. In the base game, the feature ends when no more Avalanches happen, and the reels reset to the original 6-reel, 4-row setup for the next spin.

Two types of Wild symbols can appear anywhere on the reels in the game: regular Wild and Calamity Wild. For each bet way win that starts with a combination of Wild symbols, the payout for the bet way is determined by the highest payout from either an only Wild symbols combination or a symbol winning combination. If the payout between the two is equal, then the win is paid as normal winning combination. If the payout of the Wild symbols is higher, then the win is paid as the Wild symbols combination. Bet ways consisting of only Wild symbols are paid only if the Wild symbols winning combination is 6 symbols long from the leftmost reel to the rightmost reel. Wild symbols substitute for all symbols except for Scatter and Calamity Wild symbols. Wild symbols substitution pays the highest possible winning combination in a bet way according to the Paytable. Random Wilds Feature: The Random Wilds feature activates when a Calamity Wild symbol lands as part of a winning combination. Before the play area expands and the next Avalanche begins, the Calamity Wild places 3 to 6 regular Wild symbols randomly on the reels. These Wilds can either fill empty positions or be placed over existing symbols. However, they cannot land on top of a Scatter, another Wild, or a Calamity Wild that hasn’t triggered the feature.

Scatters and high-win symbols (excluding Wilds and Calamity Wilds) can appear as 2x2, 3x3, or 4x4 colossal symbols on the reels. A 2x2 colossal Scatter counts as 2 regular Scatters, a 3x3 counts as 3, and a 4x4 counts as 4. During the Random Wilds feature, colossal high-win symbols can be transformed into colossal Wilds. Up to two colossal symbols may be transformed per spin. When wins are calculated, high-win colossal symbols and colossal Wilds are treated as multiple individual symbols based on their size. A 2x2 colossal symbol counts as 4 symbols, a 3x3 counts as 9 symbols, and a 4x4 counts as 16 symbols. These values apply during win evaluation for both high-win symbols and colossal Wilds.

In the main game, landing 3, 4, 5, or 6 Scatter symbols in succession from the leftmost reel, without any gaps, triggers 10, 12, 15, or 20 Free Spins or Super Free Spins. These are awarded after all wins have been evaluated. Any expanded reels or increased multipliers from the main game do not carry over. In Free Spins and Super Free Spins, the play area expands with each Avalanche, and any new rows gained remain in place for the next spin, up to a maximum height of 8 rows. Free Spins Mode: Free Spins are triggered when 3 or more regular-sized (1x1) Scatter symbols land on the reels during the main game. The global multiplier starts at x2 and increases by 2 with each Avalanche. Once all Avalanches for a spin are complete, the multiplier resets to x2 for the next spin. If 3 or more Scatter symbols appear in succession from the leftmost reel, without gaps, during Free Spins or Super Free Spins, the same number of additional spins is awarded for the respective mode. Super Free Spins Mode: Super Free Spins are triggered when at least one of the Scatter symbols that activate Free Spins is a colossal Scatter. The starting value of the global multiplier, along with the amount it increases by with each Avalanche, depends on the size of the colossal Scatter that triggered the feature. A 2x2 Scatter starts the round with a x2 multiplier that increases by +2 with each Avalanche. A 3x3 Scatter begins at x3 with +3 per Avalanche, while a 4x4 Scatter starts at x5 and increases by +5 each time.

1. Bonus Hunt: For 2 times the bet, at least one Scatter symbol is guaranteed to appear on the reels in the main game. 2. Calamity Explosion: For 10 times the bet, at least one Calamity Wild symbol is guaranteed to appear as part of a winning combination on the reels in the main game. 3. Calamity Max: For 30 times the bet, the reels are expanded to 8 rows, and at least one Calamity Wild symbol is guaranteed to appear as part of a winning combination on the reels in the main game. If Free Spins or Super Free Spins are activated while the Calamity Max feature is activated, the expanded 8-row play area is carried over to the Free Spins/Super Free Spins round. 4. Free Spins: For 100 times the bet, 3, 4, 5, or 6 Scatter symbols appear on the reels, activating Free Spins. It is also possible to activate Super Free Spins with a low probability. 5. Super Free Spins: For 1,000 times the bet, 3, 4, 5, or 6 Scatter symbols appear on the reels, with at least one of them being a colossal Scatter, activating Super Free Spins.