The core attraction of Congo Cash XL lies in its innovative Jewel Board feature, positioned above reels two through five. This board displays 15 jewels that can award instant cash prizes, fixed jackpots, or free spins. Activation requires landing two Butterfly scatter symbols on the first and sixth reels, along with at least one Congo Cash or Congo Cash XL symbol on the middle reels. When triggered, the Jewel Board reveals prizes ranging from 4x to 200x the bet, fixed jackpots of 20x (Minor), 80x (Major), and 2,000x (Grand), and free spins ranging from 8 to 100 rounds. During free spins, at least one wild symbol is guaranteed on the reel where the triggering jewel appeared, enhancing winning potential. Players can also purchase the free spins feature for 100 times their bet, gaining immediate access to this bonus round with a random number of spins awarded. These features add layers of excitement and multiple avenues for substantial rewards throughout the gameplay.