Play Great Blue Online Slot today


Get to know Great Blue, a friendly killer whale living swimming around the online slots at Slots Heaven UK. Together with the other sea creatures, Great Blue is a popular 25 payline slot game that can be played for as little 25p per spin.  

In addition to the fun underwater theme, this slot game has plenty of chances to win real money with stacked wilds, scatter symbols, and bonus features. In addition to Great Blue, who is the wild symbol, the other sea creatures that can found spinning on the reels include a turtle, shark, seahorse, starfish, and a fish. The scatter symbol is a clam holding a shiny new pearl, and there are also the lower value numbers and letters 9-A. 

Game Features

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

Play for Real Money

There's no need to put on a wet suit before diving in and playing with Great Blue. Simply click on the image below to begin the registration process, and once you make a deposit, you'll be able to play for real money. With several UK approved payment methods to choose from, the process is quick, safe, and secure. Before you spin the reels and try and hit the jackpot, check out the latest bonus and promotion offers and collect your Welcome Bonus today. 


There are a lot of great wins waiting for you across the 25 active paylines. However, only the Great Blue whale symbol can trigger a 10,000x jackpot payout. Make the max 20p per line bet, and you can win the big £2,000 jackpot.


With up to 25 paylines, you can decide how many you want active with each spin. Great Blue also has an autoplay and Turbo Mode, allowing you to completely customize the pace of the game. No matter how many paylines are active, all winning combinations must begin with the first reel on the left. 

  • Coins: Choose your stake from 8 different coins, from 1p to 20p per line. To make the minimum 1- bet you will only have a single active payline, going across the middle of the reels. If you activate all paylines and use the 20p coin, you can make the £5 maximum bet.
  • Symbols: The fearsome shark and the wise turtle are the two highest paying regular symbols, with max payouts of 750 times the line bet. The other sea creature symbols are a flounder fish, starfish, and sea horse. The A, K, Q, J, 10, and 9 are low-value symbols with a max payout from 100-150x. For a complete breakdown of all the payouts, check out the paytable below. 
  • Scatter: The clam with a pearl in its shell is the scatter symbol. It can pay out a multiplier of your total bet, starting with just 2 of them anywhere on the reels and trigger the bonus feature when there are 3 or more on the reels.
  • Wild: The Great Blue killer whale is not only the wild symbol, but also the symbol with the highest payouts, at 10,000x the line bet. Additionally, the wild symbol doubles the payout for all wins that include Great Blue.
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: When you have 3 or more scatter symbols, it triggers the Sea Shell Bonus feature. Before the feature begins, you'll have a chance to add to the 8 bonus spins and 2x multiplier by picking 2 of the clams located on your screen. The game has a limit for 53 bonus spins and a 15x multiplier for each round.

Software and Mobile Experience

As mobile gaming is gaining popularity, Slots Heaven UK is making sure that all our slot games can be played while on the go. Playtech had this in mind when they redesigned Great Blue to look great on screens of all sizes, and regardless of whether they are being held horizontally or vertically. The slot game looks great on mobile devices, and the buttons have all been optimized to be big enough to touch, but not too big that it takes away from the underwater atmosphere. There is no special software needed to begin playing on your phone or tablet, as long as you have a stable network or Wi-Fi connection and an active online casino account, you can start playing right away.  


Great Blue is a medium variance slot game with a relatively low max bet. This gives the average UK player a chance at winning the £2,000 jackpot. While it may not have some of the extra features that many video slot games have, the Clam Shell Bonus game can be very rewarding, especially if you manage to get all 53 spins and the 8x multiplier. The only way to play is to register your online casino account and make a deposit so you can spin the reels for real money.