A winning combination triggers gravalanche. The win amount is paid, and all winning symbols explode and disappear. Symbols that are left drop down to replace exploded symbols, and new symbols drop down to fill the reel. Gravalanche continues until there are no more wins.
A jukebox symbol can appear on the reels only during the free spins. When it lands, it stays on the screen until the end of the gravalanche. Whenever a jukebox symbol lands on the screen, it awards a random multiplier value of x2, x3, x4, x5, x6, x8, x10, x15, x20, x25, x50 or x100. 5 additional free spins can be triggered if 3 or more bonus symbols land.
8 or more matching symbols anywhere on the screen trigger a winning combination. Payouts are made according to the paytable. Wins are multiplied by coin value and each game is valued at minimum of 20 fixed coins. Only the highest win in the winning combination is paid. Malfunction voids all pays and plays. For this game, the long-term expected payback is 93. 72%.