Contents
Introduction
All dedicated slots fans know that there are treasures lurking beneath the sea. That’s because slots developers have been producing ocean-based games for many years now, which perhaps isn’t so surprising when you stop to consider the facts.
Aside from the promise of sunken treasure down on the ocean floor, there’s also plenty of opportunity for colourful aquatic characters. And myths and legends come into play with stories of sea gods, sea monsters and of course, mermaids. Sometimes a game is centred around one specific creature, such as in the Great Blue slot demo, but in Blue Sea it’s all about the crazier side of life below the waves.
Theme, Graphics & Soundtrack
Blue Sea takes place on a translucent set of reels, through which you can catch glimpses of the seabed. Columns of bubbles separate each reel, and rather than spinning downwards, symbols float up onto the reels. Once any wins have been assessed, all the symbols on the grid pop in a cascade of bubbles, and a new set of symbols floats upwards to take their place.
Everything about this game spells fun from the moment it launches on the screen. There’s a fun, cartoon-style look to the graphics, with cute animations to celebrate the biggest wins. You’ll encounter Poseidon, the god of the sea, although it has to be said he’s not looking in the least bit menacing here. He’s joined on the reels by a winsome mermaid and a selection of sea creatures. There’s a smiling shark, a worried-looking puffer fish and a grumpy angler fish, as well as a ray and an angel fish. Even the playing card icons have embraced the theme, appearing in sand, sky and sea tones to add a little extra magic. And just to add to the atmosphere, the game’s developers have added a jaunty soundtrack to keep things moving.

Blue Sea RTP & Volatility
Blue Sea has an extremely generous RTP of 97%, leaving the house with an edge of just 3%. This is something we greatly approve of, and it’s RTPs like this that make us want to dive straight into this sea-themed game. And to add to the general enjoyment, this is rated as being a low-volatility slot too. So even if you only have a modest sum available for online gaming, you should find it takes you a long way in this game. You can expect to trigger plenty of low-value wins, with the chance of occasional bigger wins if luck is on your side.
How to Play Blue Sea
Try out all of our free play Dreamtech slots, including Blue Sea, right here on our site. There’s no financial commitment, so it’s the perfect way to find out whether or not you’d like to play for real money at an online casino later on.
1 Decide how much you’re prepared to wager on the price of each spin. The more you wager, the higher the value of winning combinations, but the fewer spins you’ll be able to afford. We suggest allowing sufficient funds to permit at least 100 spins, for the best chances of ending up ahead of the game.
2 When you’re ready to start your game, press Spin.
3 Autospin delivers automatic spins at a constant wager, for optimum hands-free gaming.
4 Check out the game’s rules, paytable and paylines by hitting the Menu button.
Bet Sizes & Paytable Wins
You can place line bets on Blue Sea from just 0.01, so with 20 fixed paylines that gives a minimum stake of 0.20 rising to 100.00 per spin. Prizes are paid out for matching three, four or five symbols across a payline, with some symbols rewarding you for just two matches. Wins are paid as multiples of your line bet as follows:
10 = 2x, 5x, 25x, 100x
J = 5x, 25x, 100x
Q = 5x, 25x, 100x
K = 5x, 25x, 100x
A = 5x, 25x, 100x
Crab = 10x, 50x, 250x
Angel fish = 10x, 50x, 250x
Puffer fish = 10x, 75x, 250x
Angler fish = 15x, 100x, 400x
Ray = 2x, 25x, 100x, 750x
Shark = 2x, 25x, 100x, 750x
Poseidon Scatter = 2x, 5x, 20x, 400x
Mermaid Wild = 10x, 200x, 2000x, 9000x
Blue Sea Bonus Features & Free Spins
For the majority of online slots fans, no matter how exciting or immersive an online slots game happens to be, it’s the bonus features that really draw them in. So as you’d expect, Blue Sea includes Wild and Scatter symbols, to add some extra interest and spice up gameplay.
And if you’re the type of slots player who’s always on the lookout for a multiplier feature then Blue Sea is definitely going to be of interest to you. The Wild mermaid can stand in for any other symbol, apart from the Scatter, and she adds a 2x Multiplier to every winning combination she features in. Spin up three or more Poseidon Scatters to activate 15 Free Spins, during which a 3x Multiplier triples the value of wins throughout the feature.
Overall Review
Dreamtech slots are always filled with gorgeous graphics and atmospheric soundtracks, so they’re great fun to play. We particularly like the cartoon-style theme, which combined with low volatility and a generous RTP make this a hugely worthwhile game to play. Play it for free right here on our site, using our useful virtual balance for some added realism. Then play it for real at your favourite online casino offering Dreamtech software. Or stay here on our site and explore some of the other hundreds of great slots we have for you.
| Slot Name: | Blue Sea |
|---|---|
| Software: | Dreamtech |
| RTP: | 97% |
| Volatility: | Low volatility |
| Paylines: | 20 |
| Reels: | 5 |
| Min Bet (all lines covered): | £0.20 (GBP) |
| Max Bet: | £400 (GBP) |
| Top Win: | 1000 |
| Features: | Wild Symbol, Scatter Symbol, Multiplier, Free Spins, 5 Reels, Low volatility |
| Themes: | Sea life |
| Last Update: | 29/06/2026 |
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No. :maker does not have a UKGC license and cannot offer their games at UK licensed casinos. |
FAQs
What is the RTP of Blue Sea?
Blue Sea has a theoretical return to players of 97%.
How volatile is Blue Sea?
According to Dreamtech, Blue Sea is a low-volatility online slot.
What is the biggest win available on Blue Sea?
The top cash prize when playing Blue Sea is worth up to 1,000x your stake.
Does Blue Sea have a free spins bonus round?
Spin up three or more Poseidon Scatters to activate the game’s Free Spin bonus round, complete with 3x Multipliers applied to all wins.
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