Play Underwater Pearls for Free

As mentioned previously, the active paylines in Underwater Pearls are fully adjustable, enabling players to switch between a minimum of 1 and a maximum of 20 each spin. Available bets per line vary from a single coin to 25, meaning the game’s total cost per spin ranges from one to 500 coins.

Payouts in Underwater Pearls range from 5x your stake per line for matching three ace-through-nine playing card symbols to a massive 10,000x your stake per line for finding the game’s treasure chest logo on each reel. An oyster scatter symbol also awards a minimum payout of 40x your line bet whenever two appear, while if you find three or more you’ll get a prize payout and 12 free spins.

As well as triggering the jackpot, the game’s logo also acts as a wild symbol and awards a prize payout of at least 10x your bet per line when it is substituted for a regular icon in a winning payline.

Unsurprisingly, the theme for Underwater Pearls is based around diving and nautical exploration. Although the standard numerical symbols do still feature, each appears on the ocean floor wrapped in seaweed to maintain the feel of the game. The slot’s unique symbols, meanwhile, include everything from diving suits to submarines and naval mines to an eye patch-sporting ship captain.

One of the more visually striking aspects of Underwater Pearls comes when the bonus feature is triggered, as this changes the entire look of the gameboard. While you are floating in clear waters during the base game, the bonus feature sees the reels descend into the depths of the ocean as you search for bigger prizes, with a line of oysters atop the reels disappearing to reveal your multiplier.

During the bonus round, players are also treated to some suitably adventuresome music, while in the regular game each winning payline is heralded by its own winning ditty. Other than that, Zeus Gaming again rely on their usual bank of live casino sounds to fill in the blanks throughout the game.

While the bonus feature in Underwater Pearls definitely comes around far less frequently than in other Zeus Gaming titles such as Trojan Horse, when it does, it’s certainly worth the wait. Triggered by finding three oyster symbols anywhere on the gameboard, players receive 12 free spins as the appearance and sound of the game changes dramatically to get them in the mood for some big-money action.

The reason this feature is so lucrative is not because of the number of spins, but rather the fact that each winning spin is treated to a bonus multiplier. Simply complete a winning payline during free spins and a multiplier of between 1x and 10x your prize will be awarded to boost your payout.

Amazingly, this multiplier seems to be genuinely random rather than being weighted towards the lower numbers, so the maximum 10x multiplier appears quite frequently. This alone has a massive bearing on your winnings, but when you consider the feature is also re-triggered whenever you find three or more oyster symbols, you could win up 20,000x your bet per line and an additional 12 turns.

Certainly one of the more imaginatively-designed slots in the Zeus Gaming catalogue, Underwater Pearls is a great game providing you stick around for the long haul. The bonus feature doesn’t appear all that frequently, but when it does your potential winnings are astronomical (up to 100,000x for a single line!), so don’t be afraid to incur some short-term losses while you chase that one huge win.