When 4 or more identical symbols drop adjacent vertically or horizontally, they form a cluster and pay. Once it happens, some symbols in the cluster disappear, and the remaining ones level up to become symbols of the next level.

There are 9 levels of the symbols in the game, and the win amount depends on the level of merging symbols and their number.

4, 5, or 6 Scatter symbols hit anywhere on the screen trigger 15, 18, or 20 free spins accordingly.

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4, 5, or 6 Scatter symbols hit anywhere on the screen trigger 15, 18, or 20 free spins accordingly. If 4, 5, or 6 Scatters appear on the reels during the Free Spins round, the feature is retriggered with 5, 8, or 10 extra spins.

During free spins, all winning clusters generate sticky Cell Multipliers that remain on the reels until the Bonus round ends. These multipliers can be increased by x2, up to x128, with each repeatedly landed winning combination and applied to subsequent wins.

Players can trigger the Free Spins round by buying it at a price pictured on the button. The Buy Bonus price will be automatically adjusted if a player changes the bet. 

The feature is disabled if the Chance x2 feature is active.

A player can buy Chance x2 in the main game. It slightly increases the bet and gives the player more chances to hit free spins.

The feature is disabled if the Buy Bonus feature is active.