You might have played many virtual slot game designed on an underwater theme, but free Deep Blue online slot developed by Viaden Gaming has something extra for you. The 5-reel and 9-payline slot comes with transparent reels with bubbles in the backdrop. As the name suggests, you will find a mix of sea creatures on its reels such as sea horses, dolphins, pearls, crabs and some colorful fishes.
The online slot machine is featured with free spins and multiplier. The symbol of the mermaid is playing the role of scatter and bonus that will definitely be worth of money. If you manage to bring 5 scatters on the reels, you will get up to 500x of your total bet along with plenty of free spin rounds. In addition, free spins can be retriggered during the feature in this online slot machine.