On any spin, when a full stack of Wild Krakatoa symbols appears on Reel 3, it will break into pieces and add an extra reel making the game to be 6 reels. Player is paid for any winning combinations and is awarded a free re-spin with center reels (3 & 4) held in place. Randomly, player maybe awarded an additional re-spin. During the re-spins, each Bonus symbol will pay an award.
3 Scattered Bonus symbols trigger Free spin bonus round.