Great Blue Slot Review

Great Blue Slot Game Review

As someone who plays a lot of Playtech titles, Great Blue slot still feels like a proper classic. It runs on a 5 reel, 3 row layout with 25 paylines and an underwater theme packed with sharks, turtles and seahorses. The visuals look a bit dated now, yet the game keeps pulling me back thanks to the aggressive variance and the potential for 10,000 times my stake on a single spin.

When I sit down with Great Blue I set my expectations for a high variance ride. The slot has an RTP of 96.03% and plays from around 25p a spin, which makes it friendly for smaller bankrolls even though the swings can be brutal. The base game can feel quiet for stretches, but the combination of 2x wild wins and explosive free spins keeps the tension high.

Great Blue Symbols and Paytable

In Great Blue Symbols and Paytable the reels are packed with marine icons and standard card ranks. The orca acts as the wild symbol, stepping in for regular symbols and doubling any line win it completes. Hitting five wilds on a payline delivers the headline payout of up to 10,000 times the line bet, which is where the slot's huge potential really sits if you catch a screen full of whales.

The higher paying regular symbols in Great Blue slot are the shark, turtle and angel fish, followed by the seahorse and starfish. On the standard paytable sharks and turtles can reach 750x for five of a kind, angel fish pays up to 400x, while seahorses and starfish go up to 250x. These hits do not show up every session, yet when they land alongside wilds the doubled payouts feel significant.

Below the sea creatures, Great Blue uses A, K, Q, J, 10 and 9 as low symbols, with full five of a kind lines paying between modest single digit multiples and around 150x for the top letters. The pink sea shell with a pearl serves as the scatter symbol, paying in any position and awarding up to 40x total bet for five, while three or more scatters also trigger the main bonus round.

Symbols and Paytable

Symbol	Quantity	Payout
	Wild
	5	x800
	4	x200
	3	x20
	2	x0.8
	Scatter
	5	x40
	4	x1.6
	3	x0.4
	2	x0.16
	5	x60
	4	x10
	3	x2
	2	x0.16
	5	x60
	4	x10
	3	x2
	2	x0.16
	5	x20
	4	x6
	3	x1.2
	5	x20
	4	x6
	3	x1.2
	5	x32
	4	x8
	3	x1.6
	5	x12
	4	x4
	3	x0.8
	5	x12
	4	x4
	3	x0.8
	5	x8
	4	x2
	3	x0.4
	5	x8
	4	x2
	3	x0.4
	5	x8
	4	x2
	3	x0.4
	5	x8
	4	x2
	3	x0.4
	2	x0.16

Great Blue Slot Machine Features

In Great Blue Slot Machine Features the whale wild does more than just substitute. Any win that includes at least one wild is paid with a 2x multiplier, so mixed lines of sharks or turtles can jump in value quickly. I have had base game spins where a single extra whale turned what would have been a routine line hit into a payout that covered dozens of previous spins in one go.

The Sea Shells Bonus free spins feature is where Great Blue shows its teeth. Landing three or more sea shell scatters awards 8 free spins with a 2x multiplier, then you pick two of five shells that can add up to 33 extra spins and raise the multiplier as high as 15x. Free spins can retrigger with no cap, and there is a simple gamble option where you can try to double wins by guessing card colour.

Great Blue Slot RTP

Great Blue Slot RTP sits at around 96.03%, which is solid for a classic Playtech title, but the game carries high variance so the ride can feel rough. The standard non progressive version does not use a jackpot, yet with a stated maximum of roughly 10,000 times total stake available from wild combinations and high multipliers in the bonus, the payout ceiling is enough to keep serious slot players interested.

10,000 Credits Under the Sea in Great Blue

10,000 Credits Under the Sea in Great Blue sums up how the slot feels when it finally pays. You spin 5 reels with up to 25 paylines, choosing how many lines to activate and the bet per line, or hitting a Max Bet button to push stakes higher in one click. There is an auto spin function too, letting you select between batches of spins, even keeping them running until the bonus feature triggers.

When I play Great Blue I treat session management very seriously because the high variance can rip through a balance quickly. I prefer using smaller stakes, keeping auto play modest and watching for long patches without scatters. The Info section lays out the paytable, free spins rules and card gamble details clearly, which helps when deciding bet size, and the HTML5 build means the same layout works well on mobile or tablet.

SlotCatalog verdict on Great Blue

SlotCatalog verdict on Great Blue from my own sessions is that it earns its reputation as a classic high variance slot. The graphics are simple yet the gameplay holds up, thanks to a wild that doubles wins and a free spins round capable of stacking up 33 extra spins with multipliers to 15x. High rollers may feel limited by the relatively low maximum stake, but the 10,000x potential keeps me coming back.

Screenshots