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Big Fin Bay by Thunderkick

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Big Fin Bay Review Rating starRating star

Big Fin Bay  Demo

Thunderkick will take you on a fun-filled fishing trip with its new video slot, Big Fin Bay. At very first glance, it might seem like a peaceful slot, but the winning potential can make you think twice.

You can win payouts worth up to 15,040x per spin. Bring out your fishing gear cause we are going on a fishing trip.

Read our in-depth slot review to learn more about the big winning potential.

Release: 17.03.2021
Volatility Volatility ON Volatility ON Volatility ON Volatility ON Volatility ON
Max Win: X15040

Written by: Jasmin Williams | The review was last updated: 17 May 2024 | Fact-check by: Kim Birch

Jasmin Williams, Chief Content Officer at BETO Slots™, has worked in the English casino industry for over a decade and is regarded as a casino and slots game expert. About Jasmin Williams

Ratings by BETO Slots Experts


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Ways to Win

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Video: Gameplay & Big Win

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Slot Machine Features


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Network Jackpots

Network Jackpots

Pros Pros


OpenJackpot worth 15,040x

OpenBlend of modern and classic elements

OpenRetro and friendly graphics

OpenRewarding Wild Symbols that expand

OpenSoothing Soundtrack

Cons Cons


Close Can be too volatile for some players

Facts About the Slot

Slots Provider Thunderkick

Slots Volatility Volatility ON Volatility ON Volatility ON Volatility ON Volatility ON

Slots RTP% 96.14

Slots Game type Slots

Slots Jackpot No

Bet Range & Game Layout

Slots Minimum bet 0.10

Slots Maximum bet 100.00

Slots Reels 6

Slots Rows 7

Slots Paylines 5040

Game Themes


Game Features

Level Up Symbol Swap Additional Free Spins Random Wilds Respins Expanding Symbols Scatter symbols FreeSpins Wild

Blocky graphics and visual elements of Big Fin Bay

Blocky graphics and visual elements of Big Fin Bay

Big Fin Bay - Ready for another fishing adventure?

Help the old fisherman to catch the fish in the bay. You are set on a marine journey where you'll find fish of different types and species. Help catch them while getting great payouts at the same time.

Thunderkick is a well-known developer and makes top-notch games. Big Fin Bay proudly continues its trend. Along with the exciting story, the gameplay of Big Fin Bay is also solid. This slot also gives you a very unique matrix with 6 reels and 5040 ways to win.

You can win a Jackpot of 15,040x in a single spin. The winning combos available to you in Big Fin Bay are 117,649, thanks to the dynamic reel structure.


Theme and graphic elements

Big Fin Bay is a charming slot with a retro vibe. It's not unnecessarily loaded with shiny graphics that sometimes can overshadow the story and the theme. There is a gentle touch to the details.

The star of the game is an old fisherman with a big white beard and a red-striped hat. He has been a fisherman all of his life and knows it by heart. Luckily, he will help you in catching these fish. Enjoy the beautiful scenes of the marine world while collecting winnings from the fishes, and have fun with your new old friend.

The symbols are one of the essential visual elements, and you'll get theme inspired symbols in Big Fin Bay. The regular symbols include traditional card inspired symbols from 9 to A and high paying fish picture symbols. The special symbols are also based on the overall theme. The golden marlin is the wild symbol, substituting for all the regular symbols and frequently appearing on the reels.

You know it's a slot from Thunderkick.

Big Fin Bay has a very high winning potential

Big Fin Bay has a very high winning potential


Big Fin Bay - How To Play

It's important that you understand how to set the bets and land payouts. That's why we are here to guide you through.

Big Fin Bay will give you winnings through the payline based system. You'll get payouts when you land specific winning combos on one of the paylines. Thanks to the unique gaming grid, you can land wins in 117,649 different ways.

Set your bet by using the button on the bottom right side of the screen, and you can change the bets accordingly as you gamble. You can set any amount you like between €0.10 per spin and €100 per spin. The payouts will be given in the form of multipliers.

There is also an auto spin mode which you can use to automate your gameplay, do check it out.

Dynamic color scheme of Big Fin Bay

Dynamic color scheme of Big Fin Bay


Special bonuses of Big Fin Bay

Fishers use their nets to capture fish in seas, but you'll use that net to catch winnings in the game. With your new old buddy, you'll collect vast piles of coins, thanks to the high winning potential of Big Fin Bay and the special features. The wild symbols are exceptionally rewarding, and you should keep an eye out for them.

Mystery Wild Feature

The wild symbols in Big Fin Bay turn up randomly on the reels, and you'll get them in the base game too. These wild turn up to 3 reels into stacked wild symbols, helping you land winning combos. You won't get any scatters when you get wilds on the reels. Keep this in mind.

Expanding Wilds

The expanding wilds bonus is activated when you land a wild symbol on the reels. When triggered, the wild symbol will expand, and it will cover the whole reel with wild symbols. This boosts your chances of landing high-paying payouts.

Bonus Game Feature

It's simple to trigger the bonus round in Big Fin Bay, just land a minimum of 3 anchor bonus symbols anywhere on the gaming grid, and the free spins spinning will start. Every bonus symbol will randomly give you up to 6 free spins. This way, you can get up to 36 free spins at the starting of the round.

While the free spins round is in progress, you can also land the wild symbols. The wilds will expand in the free bonus round like they do in the base game. The wilds will also increase the length of the reels, adding more symbols for you. The expanding reels will stay expanded during the whole bonus round.

If a reel expands to its max size, which is 7 symbols, it will give you 3 additional free spins. Like this, if you manage to expand all of your 6 reels, you will get a total of 54 free spins. This expanded grid also increases your possible combos, and you can land a win in 117,649 different ways.

Peaceful and serene view in the background

Peaceful and serene view in the background


Big Fin Bay - Volatility and RTP

The RTP you get on Big Fin Bay is 96.14%, which is pretty nice, as it's higher than the industry average.

Big Fin Bay is a game with a very high variance rating. This higher slot volatility will add extra excitement to your gameplay.

Launching the Big Fin Bay video slot

Launching the Big Fin Bay video slot


Big Fin Bay's final verdict - Fish based but not at all fishy

Big Fin Bay is a fish-based theme with a friendly and simple design. It's a slot machine where you'll be hunting and hoping for the ocean's blessings, and with the help of an old fisherman, haul in some great winnings.

The winning potential of Big Fin Bay is its biggest attraction, and you can win payouts worth up to 15,040x from a single spin. The gaming grid of the slot has a dynamic structure, where the number of rows can expand in a reel. This way, you get 117,649 different winning combos.

The wilds in Big Fin Bay are very generous, and you will be thrilled to see them on the reels. The whole reel will turn into an expanding wild symbol if you land a wild symbol, which is very helpful.

Keep checking your gambling balance while betting on Big Fin Bay, as it is a high volatility iGaming title. To help you with this, we have linked the free demo version of the game. Explore the slot using the free play and have a good time. Let us know what you think of it!


Frequently Asked Questions - Big Fin Bay

What is the jackpot amount in Big Fin Bay? Arrow Arrow

Big Fin Bay has a jackpot of 15,040x, which is very impressive. A jackpot of this size is found rarely on modern online slotmachines, even for a high volatility slot.

What are Big Fin Bay's RTP and Volatility? Arrow Arrow

Big Fin Bay provides an RTP of 96.14%, which is around the industry average, and should satisfy most players. It's a high variance title, and you should expect an explosive gameplay.

Can I win free spins in Big Fin Bay? Arrow Arrow

Yes, there is a unique free spins bonus round in Big Fin Bay, which you can trigger by landing the scatter symbols. You can win up to 54 free spins from it.

What are the other special bonuses in Big Fin Bay? Arrow Arrow

The wild bonus in Big Fin Bay is exceptionally good. Whenever you land a wild symbol on the reels, it will expand and cover the whole reel, giving you a good chance to land a nicely payout.

Can I play Big Fin Bay for free? Arrow Arrow

Yes! You can play Big Fin Bay for free using the demo version. You can find the demo version here at BETO. Use it to explore the slot without risking money.