Developer 
Features Mermaid Mighty Reels by SG Digital is a five-reel slot with 20 paylines, medium volatility and a stated RTP range of 87.08% to 96.19%. The bet size range runs from 0.10 to 10.00, and the game can be used as a demo version to play for free and practice before playing for real money.
The main features centre on a WILD Mermaid symbol that expands to cover entire reels and opens the top three rows. Pearl symbols can carry cash values, while three Scatter Octopus symbols trigger the Free Spin Bonus. In that round, the reels expand and Extra WILD and PEARL symbols can appear.
Additional options include the Premium Play Feature, which can award a Premium Play Bonus on wins above 2x the bet, with multipliers from 1x to 5x bet and a chance to launch free spins. A Gamble Feature is also available on wins of 5x bet or more, giving players a chance to risk for higher wins or entry into the Free Spin Bonus.
