3, 4 or 5 scattered TREASURE CHESTS trigger 40, 50 or 60 Bonus games. 3, 4 or 5 TREASURE CHESTS during the Bonus games trigger an additional 40, 50 or 60 Bonus games. Bonus games are played for the current stake. The MERMAID substitutes all symbols except the TREASURE CHEST symbol and doubles when substituting. All wins pay from left to right except the scattered TREASURE CHEST.