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Big Fin Bay slot review

Added by Thunderkick. Information last updated: 08/04/2021

User rating:

- (0)

Expert rating:

3.3 (1)

Game information

Game supplier: Thunderkick

Release date:03/2021



Max. win:bet x 15040

Mobile version:Support all devices

Play Big Fin Bay



Max. win


Expanding reels



Sea & shore

Adventure & action

Nature & animals


User ratings (0)

Game design:



Game sounds:

Mobile gaming:



Screenshot Screenshot Screenshot
RTP (Return to player):
Max. win:
bet x 15040

Bojoko score (compared to other slots on Bojoko)
Thunderkick score (compared to other slots of supplier)

Expert's review Trystan Michielsen

Slot tested

Big Fin Bay is a slot that brings the players to the lake side where they can throw out a line and see if they can catch any of the colourful fish. Perhaps they’ll also be able to use the expanding reels, megaways and free spins to catch an extra prize.

The slot was developed by Thunderkick and released in 2021, meaning it’s one of their latest games at the moment. Its presentation is excellent, with sharp and colourful graphics that bring us to the shore of a lake. In the distance we can see several pitoresk houses and a lighthouse while the occasional boat sails past and seagulls fly from side to side. It’s all done very simply but we get a good idea of the location and setting.

We play the game on a 6-reel playing field, using the megaways feature. This means that every reel has a random length every spin, varying between 2 and 7 rows. As a result, players can get anywhere from 5,040 to 117,649 paylines to get a win on. These wins are achieved through the use of standard symbols, divided between high- and low-paying ones. The high-paying ones are different types of fish while the low-paying symbols are simple card letters.

If we switch on the music we’re treated with an upbeat energetic song that has some jazz undertones as well as more tropical influences. I thought it sounded alright but the volume is rather low and the sound-effects that play during a win will be much louder. The free spins mode does play the song at a louder volume though.


Big Fin Bay has a relatively big number of symbols which are easily distinguishable thanks to the different shapes and colours used to portray them. Meanwhile, the slot will give players the ability to see a win by having the winning symbols light up. It will also show the total win count on the screen. During the free spins mode, the background shows how evening is falling and everything is covered in orange, making it obvious to the player that they are using free spins.

When it comes to the difficulty, this slot has High Volatility thanks to the low payouts and the large number of different symbols. Wins aren’t necessarily very difficult to get naturally during the base game, but they won’t pay out a lot. In my experience, my funds tended to stay pretty stable but I would need the free spins mode to activate in order for me to get a bigger win.

To deal with the volatility, players can pick a bet between £0.10 and £100 per spin. Picking a lower bet will mean smaller wins but a player will also last longer with their funds. If you feel like you’re comfortable with the volatility or you are a power player, you can always increase your bets to win bigger amounts. The max. win of 15,040x your bet is also quite an incentive to keep playing.

When it comes to the symbols in the game, you’ll encounter the following:

  • Free Spins: Get 3 or more Bonus symbols on the screen to activate the free spins mode.
  • Wild: Wilds substitute all regular symbols in the game, except the free spins symbol.
  • Captain: Max. 7x your bet with six-of-a-kind on a winning bet line.
  • Red Fish: Max. 3.2x your bet with six-of-a-kind on a winning bet line.
  • Purple Fish: Max. 3x your bet with six-of-a-kind on a winning bet line.
  • Green Fish: Max. 2.2x your bet with six-of-a-kind on a winning bet line.
  • Blue Fish: Max. 2x your bet with six-of-a-kind on a winning bet line.
  • Ace: Max. 1.5x your bet with six-of-a-kind on a winning bet line.
  • King: Max. 1.4x your bet with six-of-a-kind on a winning bet line.
  • Queen: Max. 1.2x your bet with six-of-a-kind on a winning bet line.
  • Jack: Max. 1x your bet with six-of-a-kind on a winning bet line.
  • 10: Max. 0.8x your bet with six-of-a-kind on a winning bet line.
  • 9: Max. 0.8x your bet with six-of-a-kind on a winning bet line.


Big Fin Bay will not require a lot of explanation when it comes to the features, even if players aren’t familiar with any of the ones included in this slot. That’s simply because there aren’t that many features present anyway. The features include:

  • Consecutive Reels: Wins are awarded whenever a symbol appears on consecutive reels from left to right.
  • Megaways: Each of the 6 reels in the game has a random number of rows every spin, varying from 2 to 7 rows.
  • Wild: Wilds substitute the paying symbols in the game to help create wins.
  • Stacked Wild: During a re-spin, any Wild will expand to fill the entire reel as well as increase the number of rows on the reel by 1. When in the base game, a Wild will become a Stacked Wild if it’s part of a win.
  • Random Stacked Wilds: During the base game, the game can randomly fill up to 3 reels with Stacked Wilds.
  • Free Spins: With 3 Bonus symbols on the screen, the free spins mode is activated. Receive an extra 3 free spins if you hit the maximum height on a reel.
  • Re-Spin: When there’s a Wild on the screen during the free spins mode, this triggers a re-spin.

Most of the gameplay is hidden behind the free spins mode. Although it’s possible to get stacked wilds during the base game, it’s random and rare. When a Wild appears during the free spins mode, they will always become stacked as well as trigger a re-spin. This makes the free spins mode a lot more interesting for players.

Another detail is that the wilds during the free spins mode will lengthen the row they’re on by 1 and it will stay longer for the rest of the mode. Obviously, the more rows each reel has the more paylines are active. This in turn increases the opportunity of the game to generate a win. Once a reel has reached the maximum height of 7, it will award an additional 3 free spins.

The volatility definitely comes to the forefront during this mode, and players are more likely to see big wins when they trigger it. In my experience, getting into the free spins mode isn’t exactly easy but it happened quite frequently all the same.

In Conclusion

Big Fin Bay is a slot that brings a lot of details and creativity with it. I really liked the sense of art direction and style but I feel like they could have done more with it. There are some subtle animations in the background but the symbols are mostly static. The free spins mode also doesn’t really offer enough new things to see to feel like an important part of the game.

The gameplay is solid if pretty basic. If you’re okay with the megaways feature then this slot will be an easy fit. You can just start spinning right away without any extra explanation needed. The volatility does show itself regularly, especially since the base game offers such low payouts.

If you’re interested in the jackpot or you’re simply looking for an engaging but simple game, you can’t really go wrong with this one. I would say that only players who stick to the classic fruit machines won’t be having such a great time.

Overall rating:


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  • Features

    Wins and bets

    RTP (Return to Player):96.14%


    Max. win:bet x 15040

    Min. bet:£0.1

    Max. bet:£199

    Progressive jackpot:

    Reels & playlines



    Non-standard layout:

    Max. lines:117649

    Min. lines:5040

    Win both ways:

    Other features


    Expanding reels:

    Stacked symbols:

    Colossal symbols

    Auto play:

    Turbo play:

    Quick play:

    Virtual reality:

    Bonus features

    Bonus game:

    Random bonus:

    Progressive bonus:

    Buy bonus:

    Free spins:

    Scatter symbols:

    Bonus game symbols:


    Standard wilds:

    Sticky wilds:

    Walking wilds:

    Stacked wilds:

    Random wilds:

    Multiplier wilds:



    Walking re-spins:

    Sticky re-spins:

    Cascading reels:

    Sticky wins:


    You can play Big Fin Bay in English, Finnish, Swedish, Norwegian


    Big Fin Bay supports GBP, EUR, SEK, NOK and 2 other currencies.

    All supported currencies:
    GBP (£), EUR (€), SEK (kr), NOK (kr), CAD (C$)


    Release date 03/2021
    6th newest on Thunderkick 117th newest on Bojoko
    RTP 96.14% 0.1% > average
    8th highest on Thunderkick 682nd highest on Bojoko
    Win up to 15040 x your bet
    5th highest on Thunderkick 222nd highest on Bojoko
    Paylines 117649 588145% > average
    The highest on Thunderkick 26th highest on Bojoko
    Min bet £0.1 per spin
    The lowest on Thunderkick 191st lowest on Bojoko
    Max bet £199 per spin
    The highest on Thunderkick 177th highest on Bojoko
    Rated 0 by 0 members
    The most rated on Thunderkick 37th most rated on Bojoko
    24 more slots listed by Thunderkick

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    Expert's profile


    Trystan Michielsen

    Trystan Michielsen

    Trystan Michielsen is a Dutch native who started his career as a content writer for various small businesses who were interested in creating an online presence.

    When the opportunity arose to move to Malta and work in the iGaming sector, Trystan didn't hesitate to make the plunge. Here he worked as a Content and SEO specialist for different companies before moving back home.

    Now acting as a freelancer he maintains his connection with the online slot community by playing and reviewing the wide variety of videoslots that are released.

    Trystan enjoys playing the slots that offer a full experience, focusing on more than just the technical details but keeping an eye on its presentation. Graphics, music and style can create a game that's more than the sum of its parts.

    A writer at heart, putting thoughts to paper is something he's done for as long as he remembers. In his free time, he enjoys writing fiction as well as watching and reviewing movies.

    Latest reviews:
    Big Fin Bay cover

    Game supplier:Thunderkick

    Release date:03/2021

    RTP (Return to player):96.14%

    Max. win:bet x 15040

    Mobile version:Yes

    User rating: 0
    Expert rating: 3.3

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