Great Blue Online Slot


#AD New customers only, min deposit £10, wagering 40x, max bet £5 with bonus funds. Max bonus is 100% up to £100. No max cash out on deposit offers. Welcome bonus excluded for players depositing with Skrill or Neteller. Cashback is cash with no restriction. Full T&C’s apply. +18, Please Gamble responsible.


New depositing players only. Min. deposit: £10. Max. bonus: £200 + 25 Bonus Spins on Book of Dead. Offer valid on the first deposit. No wagering is required on Bonus Spins. Wagering Required on Bonus Cash: 40x. The match-up bonus that requires a deposit must be wagered 40x.


#AD New customers only, 10 free spins on registration (max withdrawal £100), 100 free spins after first deposit, min deposit £20, wagering 35x, max bet £5 with bonus funds. Max bonus is 100% up to £100. No max cash out on deposit offers. Welcome bonus excluded for players depositing with Skrill or Neteller. Cashback is cash with no restriction. Full T&C’s apply


18+. New Players Only. Spins are given as follows: 50 Spins upon a first deposit of minimum £10. Spins may only be used in specific games. The game allowed: Book of Dead. Wagering Requirement: 35x. Spins expire after 24 hours. Promotion available for 72 hours.

18+ new players only. Maximum £50 bonus. Minimum deposit: £20. Deposit Bonus wins are capped at £500. Max bet with active bonus: £2. Wagering requirement 100% match deposit bonus: 30 times sum of deposit + bonus. Winnings from Free Spins are credited as Real Money without wagering requirement. Some games may not be played with an active bonus. Games may contribute differently when wagering a bonus. Deposit Bonus expires after 30 days if wagering requirement has not been met. Free Spins expire after 3 days. One bonus allowed per person, address, device, IP. For full bonus terms and conditions, please read below. Responsible Gaming



Explore the beauty that is hidden beneath the crashing waves of the ocean. Playtech takes UK punters on a visual journey when they play online slot at an online casino. When the fish start swimming around, you’ll know you’ve won some money.

Great Blue has an adjustable 25 paylines and a max bet of just £5. There is one bonus feature, extra spins with a multiplier, and a top jackpot of 10,000x the line bet. The Great Blue Whale wild symbol will double the payouts for any win. Get all the details in the game review.


  • Game Type: 5 reels, 3 rows, 25 paylines
  • RTP: 96.03%
  • Volatility: Medium
  • Themes: Underwater,  Fish
  • Release Year: 2013


If you want to enjoy this virtual aquatic adventure, you’ll need to open an account at a UK casino. Choose one of our recommended online casinos, start the sign-up process to begin and you’ll be prompted to enter some basic details to register your account. Then swim over to the Cashier and  select a payment method to make your first deposit. Once the transfer is complete, you can choose a Welcome Bonus and start playing Great Blue for real cash. Check out the promotion page of your chosen site for the latest bonus offers.


Line up five wild Great Blue Whale symbols to trigger the 10,000x jackpot. Make the max bet of 20p per payline and you could win a £2,000 prize.


You can activate between 1 and 25 paylines before every spin unless you’re playing in auto spin and you can’t make any adjustments. All wins are calculated going from left to right, beginning with the first reel on the left.

  • Coins: There are 8 coin sizes to choose from, ranging from 1p to 20p. Since the paylines are adjustable, you’ll be able to customise your total bet based on the number of paylines and coin size. The minimum bet, which has just 1 active payline is 1p per spin. To get to the £5 maximum bet, you will need to activate all 25 paylines and use the 20p
  • Symbols: There are 5 high-value sea creatures swimming on the reels. The shark and sea turtle share honours as the top symbols with a 750 max payout. They begin paying out with just 2 symbols in a row. The yellow flounder has a 400x payout and the starfish and sea horse complete the high-value symbols with payouts as high as 250x. The lower-value symbols are A, K, Q, J, 10, and 9 and they can payout up to 150x. Check out the complete paytable In the chart below.
  • Scatter: The pearl-holding clam is the scatter. It can payout, based on the total bet when there are two or more anywhere on the reels. Get 3 or more on a single spin to advance to the bonus feature.
  • Wild: Fittingly, the Great Blue Whale is the most important symbol in this game. It can substitute for any symbol, excluding the scatter, has a max payout of 10,000x the line bet and doubles any win that it's featured in.
Symbol2x on Reel3x on Reel4x on Reel5x on Reel
Sea Horse-15x75x250x
Scatter (Based on overall bet)2x5x + Bonus spins20x + Bonus spins500x + Bonus spins

Wild symbol doubles all regular symbol wins.

  • Bonus Feature: The Sea Shell Bonus feature is triggered by getting at least 3 clam symbols on a single spin. The feature has a base of 8 bonus spins and a 2x multiplier. Before the spins begin, you’ll have to choose 2 of the 3 clams on the screen, which can award you with additional bonus spins or a high multiplier. The maximum number of bonus spins you can win is 33, and the multiplier can get as high as 15x. This feature can be retriggered multiple times.


Playtech has done a great job of recognizing the added convenience of playing casino games on mobile phones. Great Blue has been designed to work in full-screen mode with mobile devices of all sizes. The buttons will automatically adjust if you’re in landscape or portrait mode, so they are big enough to use, but not take away from the overall experience. Left-handed players will be happy to know that there is a “left-hand mode” that moves the spin button from the right side to the left when playing in landscape mode. The overall gaming experience and animations are the same regardless of which platform you’re playing.


With a relatively low max bet and limited bonus features, Great Blue is a great slot game for newer punters. It doesn’t have all the features and complicated rules of some of the more advanced games, but it still offers decent payouts, and the 10,000x jackpot has great potential. Register your account at one of our recommended casinos today and claim your exclusive Welcome Bonus. Then, take a deep dive and enjoy playing for real money today.