Harry is asleep in his boat again. That’s basically the first thing you see when the Greatest Catch slot loads  an elderly fisherman slumped in a wooden boat, surrounded by lily pads, completely unbothered. It’s a funny setup for a high-volatility slot that can pay up to 10,000x your bet.

Evoplay released this one on April 19, 2022. 5×3 grid, 10 paylines, 96.09% RTP. On paper, it looks like any other fishing slot. The mechanics underneath are where it gets interesting, specifically the way the Wild sweeps Fish values during free spins and how the buoy bar can stack multipliers up to 10x. This review covers all of it, including the Bonus Buy variant and the Mega version, so you know exactly what you’re getting into before you spin.

The Greatest Catch Slot at a Glance

Theme and Visuals

Cartoon style, not cinematic. Bright colours, clean lines, nothing that will distract you from the reels. The background shows Harry’s lake lily pads, frogs, reeds, and soft rippling water. It is relaxing to look at, which suits a slot where you are going to spend a fair amount of time waiting for scatters.

The audio is ambient rather than trying to keep you hyped. Low-key background music, gentle sound effects. Evoplay runs it on their Spinential engine, so load times are fast and mobile play is smooth. Nothing about the presentation is going to blow you away, but it does not need to.

Symbols and Paytable

Ten regular symbols are split into two groups. The five premium symbols are a shoe, a hat, a frog, a backpack, and a fish. Below those sit the standard card royals, 10 through to Ace.

Worth knowing: the shoe only needs two matching symbols to pay out. Everything else requires three. It is a small thing, but it means you will collect small shoe wins during dry base game runs more than anything else.

The Fish symbols work differently from the rest. They do not form line wins the normal way; they carry a printed cash value that ranges from 2x up to 2,000x your bet. That value only gets paid out if the Wild lands on the same spin during free spins and is collected. Outside of free spins, they are just filler symbols. That distinction matters a lot for understanding how the payout structure actually works.

Base Game

Honest assessment: the base game is where you wait. Left-to-right combinations across 10 fixed paylines, no cascades, no expanding reels, nothing that changes the grid mid-spin. The scattered golden fish symbols can land on any reel. Three of them on one spin open the free spins round.

That is the whole objective of the base game. Get three scatters. The shoe might chip in occasionally, and a hat or frog combo might cover part of your bet. But you are really just spinning until something happens.

Free Spins: How The Greatest Catch Slot Actually Works

Three scatters: 10 free spins. Four: 15 spins. Five: 20 spins. Wilds appear for the first time when the bonus round starts, and they are not standard wilds. They are collectors, and that changes what each spin means.

The Fishing Feature

A Wild and at least one Fish symbol on the same spin trigger the Fishing feature. The Wild moves across the grid and pulls in the cash value from every Fish symbol it finds. All of that gets added to your win for that round on top of any line wins. Land a 2,000x Fish with the Wild on the same spin, and you immediately understand why people chase this bonus round.

The Buoy Bar

Above the reels sits a progress bar marked with buoys. Each Wild that lands during free spins lights up one buoy. Hit four buoys, and you get 10 extra free spins, and the Fishing feature multiplier goes up. First milestone: 2x. Second: 3x. Third: 10x.

That 10x multiplier on top of a high-value Fish collection is the version of this slot that people screenshot. It does not happen every bonus round. When it does, the gap between a forgettable session and a big one closes fast.

The Dynamite Feature

Not every free spin drops a Wild and a Fish at the same time. When a spin produces a Wild on the grid but no Fish symbols, Harry reaches for dynamite. He throws it in the water and converts three to six regular symbols into Fish symbols. The Wild collects from those converted symbols instead. No payout goes to zero if a Wild is showing; the dynamite makes sure of that.

Bonus Buy Variant

The Greatest Catch Bonus Buy is a separate game, not a feature inside the base slot. You pay a multiplied stake to purchase 10, 15, or 20 free spins directly and skip the base game entirely. RTP on the Bonus Buy version is 95.98% versus 96.09% on the standard game.

If you have a session budget set aside specifically for bonus play, it makes sense. For regular sessions, the 0.11% RTP difference over time adds up, and the base game RTP is the better deal.

Mega Greatest Catch

Mega Greatest Catch came out in September 2022 and adds a fourth row, expanding the grid to 5×4 and bumping the paylines to 12. The RTP is 96.03%. Every mechanic from the base game carries over  same Fishing feature, same Dynamite feature, same buoy bar and multiplier path.

The practical difference is that a bigger grid means more symbols in play per spin. More symbols mean the Wild has more Fish to potentially collect from during the Fishing feature. It does not change how the game feels to play, but the ceiling on a single bonus spin is wider. A Mega Greatest Catch Bonus Buy version also exists at 96.03%.

RTP and Volatility: What to Expect

96.09% is above where most fishing slots sit and above the general market average of around 95.5% to 96%. Over a long session, that percentage matters, even if individual sessions will not reflect it.

Evoplay rates the volatility as High, 4 out of 5. In practice, that means the base game pays infrequently, and most spins return nothing. When a bonus round triggers, the outcome depends almost entirely on whether Wilds and Fish land together and how far the buoy bar gets pushed. A bonus that produces two Wild-and-Fish activations at a 1x multiplier might return 5x your triggering bet. The same round with the 10x multiplier running and a 500x Fish in play is a different result altogether.

The 10,000x max win is not a marketing number disconnected from reality. The mechanics that would produce it, stacked multipliers, maximum Fish values, and multiple Wild collections in one round, are all real features. Whether they align in any given session is a different matter.

Is the Greatest Catch Slot Worth Playing?

If you like Big Bass Bonanza-style collect mechanics and you can handle stretches where the base game pays almost nothing, this slot works. The free spins round has enough layers to feel engaging rather than passive. The buoy bar gives you something to track. The Dynamite feature means dead spins do not just disappear. There is structure to the bonus round that makes each Wild landing feel like it matters.

Not a good fit if you want regular small returns to extend session time. The base game will grind you down if that is what you are chasing. This slot is set up to produce infrequent but meaningful hits in the bonus round, not a steady flow of small wins across a long session.

Available across the UK and Norwegian licensed operators, it runs without issues on mobile, and the Spinential engine means it loads fast on slower connections.

Greatest Catch Slot: Final Verdict

The Greatest Catch slot does what it sets out to do. The Fishing feature is mechanically satisfying, the buoy multiplier gives the bonus real variance on the upside, and the Dynamite feature stops the round from feeling hollow when Wilds drop without Fish. The 96.09% RTP is respectable. It is not a slot that will suit everyone; high volatility with a lean base game is a specific experience, but for the player it is built for, it holds up well.

Rating: 4 / 5

FAQ

What is the RTP of The Greatest Catch slot?

96.09% on the standard version. The Bonus Buy variant runs at 95.98%. Both sit at or above the industry average. Check the pay table on the specific casino you are using since some operators run adjusted RTP configurations.

Is The Greatest Catch a high-volatility slot?

Yes. Evoplay rates it 4/5 High. Long base game dry spells are normal. Runs of 20 to 30 blank spins happen. The payout structure is concentrated in the free spins feature, so if you go in expecting regular base game wins, you will find it frustrating.

How do you trigger the free spins?

Three golden fish scatter symbols on any reel in the same spin. Three scatters give you 10 free spins, four give 15, and five give 20. Wild symbols do not appear at all during the base game, only once free spins start.

What does the Fishing feature actually do?

When a Wild and at least one Fish symbol land during the same free spin, the Wild collects the cash value printed on every Fish symbol showing on the grid. That total is paid out on top of any regular line wins from that spin. The Fish values range from 2x to 2,000x your bet.

What is the Dynamite feature?

When a losing free spin ends with a Wild on the grid but no Fish symbols, Harry throws dynamite into the water. As a result, three to six regular symbols transform into Fish symbols, which the Wild then collects. Consequently, a Wild landing without Fish is not a dead spin, as it can still generate a collection payout.

Can I Play The Greatest Catch for Free?

Yes. Demo mode is available on most slot review sites without an account. Furthermore, every feature, including the free spins, Fishing mechanic, and Dynamite feature, works exactly as it does in the real-money version. Therefore, playing through a few bonus rounds before depositing is time well spent. After all, the game feels noticeably different during free spins than it does in the base game.

What Is the Difference Between The Greatest Catch and Mega Greatest Catch?

The mechanics are the same; however, the Mega version uses a larger grid. Specifically, it expands from 5×3 to 5×4 and increases the number of paylines from 10 to 12. As a result, the additional row places more symbols on the grid per spin, giving the Wild greater opportunities to collect Fish symbols during the Fishing feature. Meanwhile, the RTP of the Mega version is 96.03%. In addition, both games are available with separate Bonus Buy variants.