Great Blue Slot: Demo Play, Review, Casinos List

Playtech is the creator of Great Blue (released on June 15, 2013), which goes with 25 adjustable betlines and a RTP of 96.03 %. The variance level is N/a and the top available win is x20000. These are the special features of this slot game: Bonus game, Free spins, Wild, Scatter, Multiplier.

Blue World Basics

I have a longstanding passion for Ocean-themed 5 reels slot machines, and Great Blue from Playtech hits that category quite effectively. Released on June 15, 2013, it displays a friendly underwater vibe with fish, turtles, and sharks swirling around on 25 paylines. The graphics come across as somewhat simple, yet I feel they get the job done by representing a calm marine setting. Meanwhile, the faint bubbling sounds during spins might not impress everyone, though it fits the whole aquatic design if you ask me.

In terms of betting mechanics, you can place anywhere from 0.01 EUR up to 50 EUR per spin. This suits both cautious bettors who prefer tiny increments and those who enjoy heftier wagers. One detail I like is the x20,000 top win, which is a decent punch for a slot that looks so basic at first glance. When your phone is on the table or in your hands, you can access the mobile version easily, and I found it basically identical to the desktop one with no major performance drops. Great Blue pays from left to right, so it’s quite intuitive if you’re used to traditional line-based slot rules.

Underwater Observations

The storyline is straightforward: it’s all about exploring marine creatures. I find the main highlights to be the bright turtle and grinning shark symbols. These two icons deliver some of the slot’s top pay. There’s also a massive whale Wild swimming around that can double any win it helps create, but I’ll chat more about that later.

Each spin can be adjusted using plus and minus tabs to alter how many lines you want active (up to all 25) and how much you stake on each line. I’ve tried staking small amounts for safer sessions, although risk-takers may jump straight to higher bets hoping to catch that x20,000 prize. Visually, Great Blue is not flashy, but that might appeal to folks who prefer less complicated animations. I also think it’s fairly old-school in design, so if you adore bold modern visuals, you might see it as dated. Regardless, the entire presentation is easy to follow, and I suspect most fans of simpler graphics can appreciate that.

RTP And Volatility Thoughts

My perspective is that any RTP over 96% can keep you in the game longer compared to lower-paying titles. Great Blue’s official return to player stands at 96.03%. This figure falls into a comfortable zone, and I’d label it moderately generous. It’s not near that super high 98%-plus range, but I still consider it solid for day-to-day play.

Regarding its volatility, official data states “N/A,” but I personally lean toward calling this one pretty high. I’ve felt some rough spells of dead spins in my sessions, yet when the bonus kicks in, it can seriously reward you. High volatility typically means you might need a deeper bankroll, so I’d propose holding at least 300 or even 500 bets in reserve if you’re prone to extended spins. Yes, it can chew up your balance if you’re unlucky, but the potential payoff might be worth the ride for those who enjoy bigger risk-reward setups.

Sea Shells Bonus Game

Great Blue features a Bonus Game that’s triggered whenever you land three or more sea shell Scatter symbols anywhere on the reels. After that, a quick transition occurs, and you see yourself awarded 8 free spins right out of the gate along with a x2 Multiplier. You then pick two shells from a set of five, which can boost your multiplier further (up to x15) or grant extra free spins (as many as 33 if luck’s on your side).

This pick-then-spin mechanic can feel nerve-racking in a good way. I’ve sometimes uncovered decent combos, like a few more free spins plus a bigger multiplier that turned an ordinary payout into something pretty sweet. Once you lock in your rewards from the initial picks, the free spins begin. For me, it’s quite an energetic moment—watching reels twirl as those multipliers can instantly inflate a modest three-of-a-kind win into a more meaningful prize. If more scatters show up during the bonus, you get another 15 free spins. Potentially, that re-trigger can strike multiple times, though I admit it’s not guaranteed, since scatters can hide for ages.

Free Spins Beneath The Surface

I see the Free Spins aspect as the heart of Great Blue’s gameplay. Three scatter shells give you the first wave of freebies plus that baseline x2 multiplier. Four or five shells yield higher scatter payouts before you even pick, so that alone might please you. In my case, I’ve hit five shells a couple of times, and it felt awesome to see that extra chunk of coins added to my balance.

During free spins, each spin outcome is magnified by the multiplier you unlocked from those picks. That multiplier can be as high as x15, which to me is quite large for a standard online slot. If you’re fortunate enough to re-trigger the feature, you keep your existing multiplier for the new wave of spins. I’ve read about folks chaining multiple re-triggers, though I’ve only snagged it once in a row. Still, the possibility remains. In short, if you enjoy features that can catapult a small win into something bigger, these free spins are likely what you came for.

Other Aquatic Elements

• Scatter Symbol: Shown as a seashell, it doesn’t require any payline alignment to grant a win. Get three or more, and you’ll launch the main bonus or add a tidy payout.

• Wild Symbol: The blue whale is the wild, and it doubles any winning combination it helps complete. Two whales alone can form a small win, too, so it’s a handy symbol even outside of the multiplier effect.

• Multiplier: There are two multiplier angles here—one built into the wild, and the other is decided in the Sea Shell picks. I like how they can stack up to produce large sums, particularly if you get the max x15 multiplier from the picks.

Advantages And Disadvantages

Pros:

• Potential x20,000 top payout, which is pretty huge
• Pick-based bonus can ramp up free spins and multipliers
• High volatility style can lead to large bursts of wins
• Straightforward controls for adjusting bets

Cons:

• Long spells without big hits can stress your bankroll
• Dated visuals and sounds may bore some players
• Re-triggers in the bonus are never a sure bet

Great Blue FAQ

Can I Play Great Blue For Free? Yes, most casinos or sites that offer a demo mode let you spin it without betting real money.

Does Great Blue Offer Free Spins? Absolutely. Three or more scatter shells kick off free spins with a possible multiplier of up to x15.

What Is The Biggest Win On Great Blue? It’s x20,000 your stake, which I find massive when you compare it to similar slots.