The Hall of the Mountain King online slot with 5 reels and 20 paylines from Quickspin. It features a Bonus Round and Bonus Spins, along with Wild and Scatter Symbols, plus it’s available for mobile play.   Deep inside the mountain, in the vast lands of the north, lives the king of trolls. He likes to tease wanderers such as yourself, and he will whisper promises of huge treasures to lure you into his hall. Will he keep his promise? Step into the cave to find out. Also, watch out when he swings his big hammer, as it changes the…