Mystic Dolphin Charge Up Slot Review

I have a lot of thoughts about dolphins 🐬. Mainly that they're too cheerful. They've figured out that life is just swimming around looking cute and getting fish handed to you – and honestly?

I respect the hustle. I've spent years trying to achieve the same vibe with significantly less success 😢.

What I haven't figured out is why they keep ending up on slot reels. Dolphins. Every time. It's like the ocean called and said, "Put a dolphin on it," and every game studio just… did 🌊.

And yet, here we are with Mystic Dolphin Charge Up slot from Relax – and this one at least has the audacity to make the dolphin useful 💵.

Gameplay

It's a 5x3 grid with 25 paylines. Left to right, three or more matching symbols to win.

The Dolphin is your Wild – it substitutes for everything except the Scatter, and it's the top-paying symbol on the board at 4x the bet for five of a kind. Behind it sits the Clownfish as your highest-paying regular symbol.

Sea Turtles, Manta Rays, and Jellyfish fill the mid-tier, then the card royals – A through 9 – handle the lower end. They all pay identically, and they'll be doing most of the hitting.

The Scatter is a Pearl in an oyster shell. Land three or more and you're going straight to Free Spins. Every Pearl that lands also gets quietly scooped into the Charge Up Meter on the left of the reels – more on that in a moment.

Now the numbers. RTPRTP stands for “Return to Player.” The RTP describes the total bet amount that a game returns to players over millions of spins, and that figure is represented by a percentage. Table games, such as Roulette, typically have higher RTPs than many slots.

RTP needs to be considered in conjunction with a game’s volatility rate. is 96.1%, volatility is high, and the max win is $190,000 off a 760x max multiplier. Bets run from $0.25 to $250. Fiat only – crypto is locked out.

Features

CHARGE UP METER:

Every Pearl Scatter that lands gets fed into the Charge Up Meter. Collect 20, and the meter triggers one of two things: it either unlocks one of three Charge Up upgrades, or fires Free Spins directly.

The upgrades unlock in sequence and each can only be earned once per bet level. Stack all three and they all activate together during Free Spins. If you change your bet mid-session, that bet level starts fresh with everything locked – so your meter progress at the previous bet stays behind.

Added Wilds

The first upgrade. Each spin of the Free Spins gets 1 to 3 random Dolphin Wilds dropped onto the grid before the spin plays out. More Wilds seeded in means more combinations forming, and more material for the next upgrade to work with.

Contagious

The second upgrade, and the one that makes things genuinely interesting. Any Fish, Turtle, Manta Ray, or Jellyfish sitting adjacent to a Wild – left, right, above, below, or diagonal – also turns into a Wild. Up to 8 surrounding positions can flip.

One Wild planted in the right spot by the Added Wilds upgrade can suddenly spread across a wide section of the grid.

Multiplier

The third upgrade. Every win during a Free Spin gets multiplied by x2, x3, or x5 for that spin. When all three upgrades combine, the order of operations matters: random Wilds land first, Contagious Wilds spread second, Multiplier applies third, then wins are calculated.

FREE SPINS:

You can get 5 Free Spins, triggered by landing 3 or more Pearls in a single spin or by filling the Charge Up Meter to 20. Any upgrades you've unlocked at that bet level activate. The feature plays at the triggering bet and cannot be retriggered.

One more wrinkle: if 3 or more Scatters land to trigger Free Spins, those Pearls still count toward the Charge Up Meter first. Any excess Scatters beyond what filled the meter are stored and processed after the feature ends, keeping the momentum going.

Performance

Tested across desktop and mobile – nothing to report. The Charge Up Meter animations are fun without slowing things down, and the grid runs cleanly on smaller screens.

Maximum Win

The max win is $190,000, built on a 760x max multiplier. Bets go from $0.25 to $250. That 760x ceiling is really low for a high-volatility slot – but we move.

Conclusion

So here's what you're actually dealing with. High volatility, and a feature that needs patient meter-building before it reaches full power. You can trigger Free Spins with zero upgrades if three Pearls land early in a session. Five spins, no extras. Quiet.

The feature gets really good when all three stack up – Added Wilds seeding the grid, Contagious turning the neighborhood Wild, and the Multiplier doing the maths on whatever lands.

That's the combination that makes $190,000 something other than a fantasy. Getting there takes time and a consistent (and huge) bet level.

That last part matters. Switching bet sizes mid-session resets your meter progress at the new level, which stings if you've been grinding toward upgrade three. Pick a bet and stay on it.

The Clownfish is your target regular symbol – it pays 3.2x for five. The Wild pays 4x for five and substitutes everywhere. Card royals pay identically across the board and won't move the needle much.

If you like structured build-up mechanics and can sit with a slow burn, this has a satisfying payoff when all three upgrades combine. If you need something that punches from spin one? This isn't it. Fiat players only. Keep your bet level consistent. Let the meter fill.

Slot Details

Game Provider: Relax
Game Type: Video Slots
PaylinesPaylines are preset lines that run across the reels, and when you land matching symbols on them, that will result in a payout. The more paylines, the more ways you can win, but also the higher your bet per spin.: 25
Volatility RateSlot games can have low, medium, high, or extremely high volatility rates (or a combination thereof).

The less volatile the game, the more often it should pay out, but the lower the amount, the less the payout, as this is in keeping with the risk you’re taking. Volatility rate should be considered in conjunction with a game’s RTP.: High
RTPRTP stands for “Return to Player.” The RTP describes the total bet amount that a game returns to players over millions of spins, and that figure is represented by a percentage. Table games, such as Roulette, typically have higher RTPs than many slots.

RTP needs to be considered in conjunction with a game’s volatility rate.: 96.1%
Bonus Round: No
Progressive: No
Free Rounds: Free Spins
Max Multiplier: 760x
Max Win: $190,000
Published by
BitStarz, award-winning Bitcoin Casino