Big Tuna Bonanza Slot Review

⭐ 7.5/10
Create by: BGaming
Review by:
Posts by Michael White
Updated: November 29, 2025

Big Tuna Bonanza is a Average volatile slot from BGaming with an RTP 97.20% and up to x5000 maximum win. Play demo for free.

Big Tuna Bonanza Slot Demo

Software
Release Date
2025-08-07
RTP
97.20%
Max Win
x5000
Volatility
Average
Bet Range ($,€,£)
0.10 - 50
Number of Reels
5
Betways
10
Features
Bonus Bet, Bonus Buy, Collect Symbols, Fish, Multiplier, Sea, Water

Big Tuna Bonanza Slot Overview

Big Tuna Bonanza is a BGaming video slot that takes me on a lovely fishing adventure with a light-hearted theme. The game uses a 5 reel, 4 row layout with 10 paylines and bets from 0.10 to 50 per spin. It mixes a relaxing fishing trip mood with the thrill of chasing big wins through Prize Symbols, Wild Symbols, Free Spins, Chance x2 and a Bonus Buy feature.

The default RTP sits at 97.2% with medium volatility and a hit frequency of 31.25%, so I feel the balance between dry spells and hits is fair for this style of slot. On average the bonus lands about once in 205.3 spins. Base game spins stay engaging thanks to Prize Symbols, while the main action arrives when the Bonus Game drops and the fisherman joins the reels.

Big Tuna Bonanza slot screenshot

Big Tuna Bonanza RTP, Volatility and Max Win

From a numbers point of view, Big Tuna Bonanza is very appealing for regular play. The RTP is 97.20%, which is high for an online slot, and the volatility is rated medium, or 5 out of 10. The max win reaches 5,000x the bet with listed odds of around 1 in 15,973. For me that combination of strong return, steady swings and clear max potential gives the maths a very attractive profile.

Bonus Features in Big Tuna Bonanza

The bonus game in Big Tuna Bonanza starts when I land 3 or more boat Scatters anywhere on the reels. Hitting 3, 4 or 5 Scatters awards 10, 15 or 20 Free Spins. During these spins the mood shifts, as the fisherman Wild arrives and Prize Symbols start to matter much more. This is where I have the best shot at climbing towards the advertised 5,000x max win.

The fisherman Wild appears only in Free Spins, substitutes for all regular icons except Scatter and Prize Symbols, and pays 1x, 3x or 50x stake for 3, 4 or 5 in a combo. Every Wild that lands is collected on a trail above the reels. Each set of four collected Wilds retriggers 10 extra Free Spins and adds a global multiplier, moving through 2x, then 3x and finally 10x, which can lead to powerful rounds.

Prize Symbols show fish with cash values from 1x to 10x bet. In the base game I need at least three on a line to collect the total of their displayed values. In Free Spins the fisherman Wild scoops up every Prize Symbol in view and applies the current multiplier. If I do not want to wait, I can pay 100x bet to buy the feature, playing with a stated RTP of 97.2%. Chance x2 raises the odds of triggering Free Spins for a 50% higher stake.

Bonus Buy Feature

Bonus Buy Free Spins Feature

Free Spins Feature

A player can buy a round of Free Spins at the pictured price. If a player changes the bet, the Buy Bonus price is also changed automatically.
Feature Cost: x100 Bet
RTP: 97.2%
Volatility: -

Big Tuna Bonanza Symbols and Paytable

Big Tuna Bonanza keeps the symbol set clear and easy to follow. The lower paying icons are green, orange, blue, red and purple clams, which return between 2x and 3x the bet for five of a kind. The higher paying side shows a fishing net, bait, a fishing rod and a tackle box, paying roughly 5x up to 50x for five. On top of this, fish Prize Symbols carry separate cash values from 1x up to 10x stake.

The detailed paytable from the game lists five of a kind prizes stepping through 4x, 6x, 10x, 20x, 60x and 100x, with three and four of a kind sitting between 0.4x and 6x. Some single special symbols also pay between 3x and 20x on their own, adding extra excitement. The boat Scatter triggers Free Spins, while the old fisherman Wild both substitutes and pays, making premium lines and collected Prize Symbol wins very satisfying when they land together.

Symbols and Paytable

Symbol Quantity Payout
icon 1 5 x100
4 x6
3 x2
icon 2 5 x60
4 x4
3 x1.6
icon 3 5 x20
4 x2.4
3 x1.2
icon 4 5 x10
4 x2
3 x1
icon 5 5 x6
4 x1.6
3 x0.6
icon 6 5 x6
4 x1.6
3 x0.6
icon 7 5 x4
4 x1
3 x0.4
icon 8 5 x4
4 x1
3 x0.4
icon 9 5 x4
4 x1
3 x0.4
icon 10 1 x20
1 x10
icon 11 1 x6
1 x4
icon 12 1 x3
1 x2
icon 13 Scatter
icon 14 Wild

Big Tuna Bonanza Slot Design and Gameplay

The visual design of Big Tuna Bonanza feels bright and positive, built around a light-hearted fishing theme with clear blue skies, calm water and ideal conditions. The 5x4 grid sits just under the surface, while the Chance x2 and Feature Buy buttons rest on the left and core controls lie along the bottom edge. I have played it on desktop and mobile, and the layout, animations and sounds work well across devices without distractions.

Big Tuna Bonanza slot screenshot

Big Tuna Bonanza Slot Verdict

After many sessions, I see Big Tuna Bonanza as a very solid fishing slot with familiar features and strong stats. The 97.2% RTP, medium volatility, 31.25% hit rate and 5,000x max win create a player friendly experience with good win potential. The Chance x2 mode and Bonus Buy option suit different moods, whether I feel like grinding the base game or jumping straight into high volatility Free Spins action.

Gameplay wise, this is a classic fish and collect setup, and as a long time slot player I have seen this structure many times. It may not feel especially fresh for anyone who spends a lot of time on fishing games, yet the execution is polished and the atmosphere is charming. When the fisherman Wild starts collecting Prize Symbols with higher multipliers, Big Tuna Bonanza still delivers very satisfying moments and a relaxed, enjoyable fishing trip vibe.

Screenshots

Big Tuna Bonanza slot screenshot 1
Big Tuna Bonanza slot screenshot 2
Big Tuna Bonanza slot screenshot 3
Big Tuna Bonanza slot screenshot 4
Big Tuna Bonanza slot screenshot 5
Big Tuna Bonanza Final Ratings
Theme & Symbols








Sounds & Music








Bonus Features








RTP (97.20%)








Max Win (x5000)








Originality








FAQs About Big Tuna Bonanza

Can I play Big Tuna Bonanza free slot?

Absolutely! You can enjoy Big Tuna Bonanza for free on our website without registration. Our partner casinos of BGaming also usually offer demo mode access.

Can I win real money on Big Tuna Bonanza slot?

Yes, to win real money in Big Tuna Bonanza, you'll need to create an account at a licensed casino site. You can then play for real and win up to x5000.

Can I play Big Tuna Bonanza slot on mobile phone?

Yes, Big Tuna Bonanza is fully optimized for mobile devices and runs smoothly on any devices.

Compare Big Tuna Bonanza With Other Slots

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