Six or more of the Vs scatter symbols will trigger the Nightmares vs Gigablox Versus feature. Before the game starts, two of the nightmare characters will be chosen at random, one to be the Champion and the other as the Challenger.
As examples of each symbol land on the reels, the two characters (shown beside the reels) will fight, and meters on either side of the reelset will be filled. As positions are filled on these meters, mechanics will be added, such as multipliers and extra free spins. After a point on the meter, the two symbols can become wild, and may have multipliers added.