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Great Blue Slot

The Undersea Orca Classic from Playtech!
Also with a Jackpot Version.

Best Casinos for Great Blue


100 Bonus to 200.00

Ts & Cs

New Players Only. Wager from real balance first. 50X wager the bonus. Contribution varies per game. selected games only. Wager calculated on bonus bets only. Bonus valid 30 days / Free spins valid 7 days from receipt. Max conversion: 3x the bonus amount or from free spins: £20. Withdrawal requests voids all active/pending bonuses. Excluded Skrill deposits.

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  • Frequent promo specials
  • Great on mobile
  • Fast cash outs

Welcome Package 878.00

New players only. Wagering occurs from real balance first. 50x wagering the bonus, contribution may vary per game. Available on selected games only. The wagering requirement is calculated on bonus bets only. Bonus is valid for 30 Days from issue. Max conversion: 5 times the bonus amount. Full terms apply.

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  • Good selection of Games
  • Fast payouts

100% Bonus up to £/€/$100 + 100 Spins

Ts & Cs

New customers. Spins: 200 in total with 40 given on first deposit, winnings given as bonus funds, 20x wagering. Spins and bonus wagering on selected aotg games only. Welcome bonus: £20 min deposit, max bonus £100, wagering 40x. Game weighting applies. Betting limits: slots – £5 all other games – 10% of bonus amount. Not available on ios app. Selected games only. Payment restrictions + T&Cs apply.

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  • Good for Playtech
  • Bonus spins on bonus

100% up to €/$/500 (CA$1000 in Canada)

Ts & Cs

New Customers only.
The minimum deposit is €20.
The 100% bonus is capped at €500, $500, CA$1000 or NZ$500.
Wagering requirement of the 100% bonus is 25 times your deposit plus bonus. If you deposit €25, for example, you will need to wager €1250: (€25 {deposit} + €25 {bonus}) x25.
All games count towards these wagering requirements. However, certain games will have a lower weighting than others

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  • The Glitz of Vegas online
  • Well stocked with Playtech and other games
  • Generous Canadian offer

What is the Great Blue Slot?

Great Blue is an oceanic five-reel and three-row slot machine from Playtech with twenty-five pay-lines and an Orca (Killer Whale) as its star symbol. You’ll also see Fish, Sharks, Seahorses, Starfish, Turtles, Pearls and playing card numbers.

Features include a bonus game with Free Spins, multipliers, a Gamble Game, scatters, stacked symbols and wilds. The game was launched in June 2013 and has an RTP (Return to Player) of 96.03%.

How Does it Look?

great blue slot fish symbolWell, it’s pretty blue of course! Great Blue is an “Under Sea” slot that’s full of bright colours, soothing sounds and easy-on-the-eye graphics- a real mood lifter that can go from calm to crazy with the click of the spin button!

Let’s dive into this slot game and spin some orcas.

Playtech’s Great Blue is one of those games for those who want to kick back and watch the aquatic world cruise by until the action gets underway that is. And then the pace can pick up quite a bit.

The underwater world is a theme that we have seen many times before with games like the Ariana slot machine and Mermaids Millions. Great Blue is up there with the best of them, themed on an ocean world that is full of slot treasure. Hopefully, you will line your pockets with some treasure.

Despite its calm vibes, Great Blue is a high-variance game like the Marilyn Monroe Slot. These games have been built to be volatile, so things can go pretty crazy every so often, although you might also run into some lean periods, so buckle up and plan your betting accordingly.

great blue slot screenshot

The Great Blue Slot Intro

Playtech’s Great Blue is themed on a huge orca and this slot packs a punch with a solid bonus feature and stacked Wilds to keep the action coming as long as you keep those reels spinning.

While a blue world can be relaxing, this slot also offers up some high volatility gameplay, which fans of games like the Diamond Queen slot will be familiar with. Just make sure you’ve got your bankroll plan ready, as it may not be plain sailing. But for the brave, it could land you with some nice wins.

The background to this slot is the blue ocean with bubbles rising in the background, (that’s the soothing bit). The reels are transparent and you will mix with a whole ecosystem of sea creatures on the reels.

The background music to play is upbeat with a high-energy vibe that suits the high volatility of the game.

How to Play

great blue slot pink starfish symbol

The high value creatures that inhabit the reels are a turtle, a shark, a seahorse and a starfish and these marine animals are accompanied by the lower-value icons of play, the Ace through 9 of a playing card deck.

The game’s Wild is the Great Blue orca of the slot’s title, and he can be a generous creature. The orcas can stack over an entire reel, making for more winning combo opportunities. And when the orca is part of your winning combo he will also double your win.

The Wild symbol subs for all icons except the Scatter which is an oyster containing a big pearl.

Blue Bonanza

The slot’s feature bonus is triggered by landing three or more oyster Scatters onto the reels. You’ll get eight free spins with a 2x multiplier in play.

First up you’ll get a new screen where you will play a picking game. Here you choose to open two out of the five oysters on display.

great blue slot shark symbol

These shells have some generous treasure in them with a cracking 15x multiplier hiding in their midst, as well as 33 free spins that are up for grabs. This is a high-variance slot like Immortal Romance – make no bones about it!

Also, the Great Blue stacked wild comes into play in the free spins round, so your theoretical maximum win from the free spins is 100x or more. Treasures of the deep!

The other great thing about the free spins round on this game is that you can re-trigger the bonus from within the feature. That is one of our favourite features on a slot by the way.

If you like to take your game to another level, there’s also a gamble feature. We’d play this sparingly if we were you. Best to bank your wins while you can.

Great Blue Jackpot

There are two versions of this game: the original (and most popular) and the Jackpot version which has a slightly lower RTP (95.02%). And that’s because some of your bet will contribute to a series of four jackpots that can be triggered at random while you play.

If you manage to trigger the Great Blue Jackpot feature, you will head into a jackpot bonus game, where you are guaranteed to win one of four progressive jackpots. Pick from a collection of coins. Match three and you win the associated jackpot, which are the Fish, Turtle, Shark and Whale jackpots in order of importance. Good luck!

Pros and Cons

  • The wild doubles any win it helps to build.
  • Win up to 20,000x your bet.
  • Free spins bonus goes up to 15x multiplier with 33 additional spins.
  • Starting to feel dated.
  • The spin music can start to grate after a while.


The Great Blue slot remains one of Playtech’s most popular games along with the Age of the Gods slots despite its age. 

But, don’t forget, even though it has a chilled vibe, Great Blue is still a medium to high variance slot, so play carefully. It can take over 500 spins to hit the free games bonus.

If you like a medium to high-variance slot, you can also try Punk Rocker from Play ‘n Go- the graphics aren´t quite as “whizzy”, but it’s also a good solid slot game.


Great Blue
Max Win
Ocean, Sea, Orca, Blue, Starfish
Bonus, Free Spins, Multipliers, Gamble Game, Scatters, Stacked Wilds, Wilds
June 2013



  • What is the RTP of Great Blue?
    The Return to Player on this Playtech slot is 96.0% which is about average. Careful though, as it’s pretty volatile. The RTP on Great Blue Jackpot is about 1% lower as you will be contributing into the four progressive jackpots.
  • What is the Max Win?
    The maximum win is a solid 20,000x your bet. This would be in the free spins thanks to the multiplier.
  • Can you re-trigger the free spins?
    Yes you can, adding another fifteen free games every time. In theory, there is no limit to how many times you can do this. In practice, it all comes down to luck of course.
  • What is the Wild symbol?
    The Wild is Great Blue himself, the Orca. This symbol substitutes for all others except the scatter and it doubles all wins