The symbols fall into position in the reels, instead of spinning. A winning bet line will start an Avalanche. Symbols in winning combinations explode and disappear, leaving space for a second Avalanche of symbols.

All symbols in the main game and in Free Spins also appear as a Colossal version, except for the Wild symbol in the main game. The Colossal symbol is a symbol block of 2x2 or 3x3 symbols. Colossal symbols are fully or partially displayed depending on how the reel lands. During the Avalanche, a Colossal symbol may fall in. Once the Colossal symbol has been placed, any remaining empty spaces are filled with regular symbols. It is not possible to have 2 or more Colossal symbols visible at the same time.

After the first Avalanche, the Colossal Crush feature can be activated in both the main game and in Free Spins. A Colossal symbol must always have symbols in all the positions directly underneath it. When a new Colossal symbol falls down, it may randomly crush extra rows of symbols underneath it. If there still are empty positions underneath the Colossal symbol, as a result of a previous win, the Colossal symbol falls, crushing all symbols on the row underneath it. This continues until the Colossal symbol is at the bottom of the screen or until there are no empty positions underneath it.

The Bonus Wheel is a symbol block of 3x3 symbols that can land on the last 3 reels only, in both the main game and in Free Spins. It may land fully or partially visible in the play area. Once all Avalanches and win evaluations are over, the Bonus Wheel stops. Coin wins, Free Spins, or both, may be won on the Bonus Wheel. Unlike regular symbols, the Bonus Wheel is not removed after the win is awarded, meaning there will be no Avalanche after its evaluation. In addition to the Colossal Crush feature multiplier, the coin win values on the Bonus Wheel are also multiplied. However, this multiplier is not reset if there is a following Avalanche, instead if the multiplier increases again, the multiplier on the coin wins is increased further. When the Avalanche stops, the Bonus Wheel coin win is evaluated.

Free Spins are played at the same bet level and coin value as the round that activated Free Spins. In Free Spins the Wild symbol may be a Colossal Wild symbol. If a Colossal Wild is part of the win, it is split up into 1x1 Wild symbols. The Wild symbols that are part of a win explode and disappear. The Wild symbols that are not part of the win stay on the reels and are part of the next Avalanches until there are no more wins.

Wild symbols substitute for all symbols except the Bonus Wheel.