Tumble Feature
All winning symbols are removed from the reels by an explosion after a winning combination is made, and new symbols drop in from above. If you're able to make a new win when the grid is refilled, those winning symbols are also removed while new ones are added. The Tumble continues until no more wins are made.
Multiplier Spots Feature
Whenever a winning symbol explodes, it leaves a mark in its position. After the second time a symbol explodes in the same spot, a multiplier starting at 2x is added. The multiplier will double for every following explosion until it reaches a maximum of 128x.
The multiplier applies to all wins connected to it, and several multipliers in the same win are added together. In the base game, all marked spots are cleared when a tumble finishes and a new spin starts. In the Free Spins, the multipliers don't reset between spins.
Free Spins
Landing 3, 4, 5, 6, or 7 Scatter Symbols anywhere on the screen triggers 10, 12, 15, 20, or 30 Free Spins. Multipliers remain during the entire feature and can increase during subsequent tumbles. Landing 3 or more Scatter Symbols will retrigger the Free Spins. The feature ends when the player runs out of spins or when the max win of 5,000x the bet is reached.
For information on symbols and base game instructions, please see in-game help menu.