The Mermaid Queen slot from SG (Scientific Games) has 10 winning lines. Play Mermaid Queen and take a voyage to a magical land of clear blue waters and magical creatures. Featuring a lucrative Free Spins Bonus where every win is multiplied by 3x, Mermaid Queen is an exciting game sure to be a hit with players of all kinds. WILD substitutes for all symbols except SCATTER. WILD doubles all pays it substitutes for. 3 OR MORE MERMAID SYMBOLS AWARDS 15 FREE GAMES WITH ALL WINS X3. An alternative set of reels is used during the Free Games Bonus.