Gorillas
First, the PRIMATE WILD symbol converts to a full 1x4 stacked super wild. Next, a multiplier is added. Finally, unlock stacked, sticky, multiplier WILDS which may stay on the reels for several spins at a time.
The more aircrafts you down, the higher your multiplier! Also, you get additional free games. The more you play, the bigger your multiplier. Come challenge the King of the Jungle!