Come on in! The water is beautiful!
See what you can reel in on Betsoft's new 25-line Slot!
Come on in! The water is beautiful!

Great Blue Slots

The 25-payline, five-reel Great Blue Slots is a popular hit from gamemaker Playtech, and that’s no surprise. Underwater-themed games are very popular among slots players right now, and Playtech is one of the largest online gaming developers, with numerous innovative titles under its belt since its founding in 1999. Great Blue is yet another example of the excellence in slots gameplay Playtech is known for, and players get to experience deep-sea life for free on their tablets, desktops or mobile devices for free right here at Great Blue Slots.

While Great Blue is an excellent game to check out for a cool underwater theme, there are many other titles from leading developers that also allow players to get into the marine slots trend. If you’re ready to dive into the deep blue, these underwater-style games are all available from our website for free with no registration required.

Lord Of The Ocean (Novomatic)

Lord of the Ocean is all about Poseidon, the Greek sea god, and this five-reel, ten-payline game comes to players from Novomatic. Founded back in 1980, Novomatic is among the biggest tech gaming companies worldwide and is known for its beautiful designs and thrilling gameplay. Lord of the Ocean doesn’t disappoint on these fronts in any way, putting you right into the legendary Captain Nemo’s Nautilus so you can explore the ocean floor and score big at the same time.

Dolphin Treasure (Aristocrat Gaming)

In Dolphin Treasure, you get to visit dolphins and other sea creatures while enjoying exciting wild sequences that feature the intelligent mammal leaping right up and over your screen. A five-reel game with 20 paylines, Dolphin Treasure comes to you from Aristocrat Gaming, which was founded in 1953 and has since expanded into a global company with a reputation for innovation. This fun game also has wilds, bonuses and other features that will make your scores swell.

Dolphin’s Pearl Deluxe (Novomatic)

An entry from gaming leaders Novomatic, Dolphin’s Pearl Deluxe is a revamped version of a previous hit from the developer, the Dolphin’s Pearl. As intrepid explorers, players can move across the ocean floor while winning big on this five-reel slot with ten paylines. There are the traditional poker values from Nine to Ace in play along with fun marine-inspired symbols such as the lobster and the dolphin. Of course, the dolphin is wild, adding a 2x multiplier to winning combinations that feature it.

Dolphin Reef (NextGen)

The 25-payline, five-reel slots Dolphin Reef is from NextGen, a leader in the independent slots gaming market that was founded in 1999 and has continued to innovate through its games. In Dolphin Reef, players get to search for sunken treasure while enjoying marine-themed symbols like turtles, starfish and clown fish. The generous multipliers pay up to 5,000x the stake, and there are also wild and scatter bonuses, a free games segment and a re-spin feature.

Dolphin Gold (Lightning Box)

Players may not be able to swim with dolphins, but they can spin with them on Lightning Box’s 40-payline, five-reel Dolphin Gold. Founded by mathematicians, Lightning Box has developed some truly exciting and innovative games, and Dolphin Gold is right at home among its hit titles. The colorful background of this playful slots game is vivid coral and a treasure trove, which really sets the tone as players dive for bonuses and wild multipliers that can net as much as 1,000 times the bet.

Majestic Sea (High 5 Games)

Majestic Sea is from developer High 5 Games, which has over 300 games in its stable and is famous for its interactive gameplay and unique art styles. The Majestic Sea is right at home with High 5 Games’ other titles, as it features vivid characters, a scatter symbol, plenty of free spin chances and a stunning 10,000x bet multiplier for the lucky players who have five of the wild symbols appear at one time. This game also offers split symbols to add some spice to its gameplay.

Under The Sea (BetSoft)

BetSoft’s Under the Sea has 3D visuals and fun animation bits that are sure to please players of every experience level. This innovative company has been at the forefront of 3D visuals in the online slots market, and its skills are on full display in Under the Sea. With 30 paylines, five reels and cheerful music, the lively atmosphere of this game pairs well with its two bonus games, the wild symbol and a scatter that can award free spins and a double-the-bet payout, along with a fun mini-game for more chances to win.

Mermaid’s Treasure (Nucleus Gaming)

Mermaids make everyone smile, and Nucleus Gaming has paid attention to this fact in its Mermaid’s Treasure slots game. This developer prides itself on its detailed graphics and interactive gaming experiences for players, and Mermaid’s Treasure delivers in both of these areas. With 30 paylines, five reels and a host of marine characters to keep the player’s interest, there is eye candy to enjoy and winnings to collect. It’s the details that truly deserve a mention here, as seaweed gently moving in the water and bubbles coming up the sides of the play area really add to the overall game experience. The scatter in this game awards both free spins and a prize multiplier, while the wild will also net players up to 8x their bet.

Mermaids Millions (Microgaming)

Microgaming is credited as the granddaddy of online casinos, creating the first true one back in 1994. Since then, this developer has grown into an industry leader with many famous titles under its belt. One of the older titles is Mermaids Millions, which is a refreshingly simple slots game that still features two special bonus rounds, five reels and 15 paylines. The symbols in this game are related to its marine theme, with pearl-holding oysters, King Neptune, treasure chests and mermaids themselves. The scatters here are delightful mermaids, and the king is the wild. For the bonus, players will get some vivid treasure chests to enjoy and plunder at the same time.