BGaming

Big Tuna Bonanza

Sea fishing slot where Wilds collect valued Fish symbols

SlotRanker Score

/ 99

05099

The SlotRanker Score is calculated from the visible data below. It is not affected by affiliate deals, and it cannot be bought.

How this score is built

RTP

97.2%

return to player

Volatility

Medium volatility

variance

Max win

5,000×

top multiplier

Min bet

$0.50

per spin

Reels

10 lines

Player rating

3.9 ★

13 votes

DEMO Play free, no signup

BGaming

Embed on your site

3.9 / 5

13 ratings

User ratings are shown separately from the Slot Score unless stated otherwise.

Five weighted signals shape the composite. Four context signals refine ties. See how we rate for the full methodology.

Payouts & RTP10/10

RTP 97.2% → 10.0/10

Volatility8/10

medium → 8.0/10

Win Potential7.4/10

x5000.00 (5000×) → 7.4/10

Features10/10

12 features → 10.0/10

Game Mechanics5.9/10

f=12 r=5 p=10 → 5.9/10

Context signals (tie-breakers)

Layout6/10

5x3 → 6.0/10

Bet Flexibility4/10

0.5–50 (×100) → 4.0/10

Provider Reputation7.2/10

provider avg 7.2 → 7.2/10

Popularity3.2/10

search demand p35 + proxy blend (70/30) → 3.2/10

Popularity blends real player search demand (~30 markets) with a catalogue-derived proxy; games without measurable search demand use the proxy alone. Not live play telemetry.

Cite this score

SlotRanker Score: 75 — Big Tuna Bonanza by BGaming

https://slotranker.com/bgaming/big-tuna-bonanza#score

How to cite

Slot Summary

A tuna catch supplies both the subject and the prize logic in Big Tuna Bonanza. BGaming assigns cash values to Fish symbols, then changes their role during Free Spins by letting a fisherman Wild collect them. Repeated Wild appearances add more spins and raise the Free Spins Multiplier through successive stages, giving the medium-volatility game a clear route toward its x5000.00 ceiling and unusually high 97.2% RTP.

How It Plays

The base loop gives each Fish symbol a displayed cash value. Landing at least three Fish symbols on a winning line pays the sum of those values.

Free Spins change the collection rule because Fish values require the fisherman Wild to land. That Wild also advances a separate counter toward additional rounds.

Theme & Atmosphere

Fish and Sea define both the imagery and the underlying rule, with the size of a catch represented directly by the values attached to Fish symbols.

The Animals theme stays mechanically relevant after the bonus begins. Fish become collectible prizes, while the fisherman Wild determines when those displayed values are awarded.

Animals Fish Sea

Features & Win Potential

The Wild Symbol shifts from substitution to collection during Free Spins, gathering visible Fish values and advancing the count toward Additional Free Spins.

Each extension adds a stronger Free Spins Multiplier. The sequence moves through x2, x3 and x10 stages as further sets of Wild symbols are collected.

Free Spins Multiplier Scatter Symbol Wild Symbol Bonus Game Symbols collection (Energy)Additional Free Spins Bonus symbols Bonus Bet Free Spins Multiplier Random multiplier Additive symbol

Bonus & Free Spins

Three, four or five Bonus symbols trigger ten, fifteen or twenty Free Spins respectively, making the opening length depend directly on the triggering combination.

Every fourth Wild grants ten Additional Free Spins. Those extensions occur after the initial round and apply increasingly large Free Spins Multiplier values.

Spec sheet

Big Tuna Bonanza at a glance.

Identity

Slot nameBig Tuna Bonanza

StudioBGaming

Released8/6/2025

Math

SlotRanker Score75

RTP97.2%

VolatilityMedium volatility

Max win5,000×

Bet range$0.50 – $50.00

Player rating3.9 / 5 · 13 votes

Format

Reels5

Paylines10

Layout5x3

Features

Themes

This game is searched most in United States, Argentina, and Austria.

Expected average based on this slot's 97.2% RTP — individual sessions vary with volatility.

Bet per spin

Spins per hour400

Session length (hours)

Cost per hour$5.60

Cost per session$5.60

Estimate only, for entertainment purposes — treat gambling as entertainment, not a way to make money, and set a budget you can afford to lose.

How long could a bankroll last on Big Tuna Bonanza? We simulate thousands of sessions from this game's published RTP and volatility — the long-run math, not a prediction of your next spin.

Bankroll ($)Bet per spin ($)Speed

Volatility tier: Medium

Running simulation…

How this works

Each simulated spin either misses or returns a win drawn from a log-normal distribution, with the hit rate and spread set by the slot's volatility tier (Medium). The model is calibrated so the average return equals this slot's published RTP (97.20%), with wins capped at its top multiplier (5,000×).

This is a simplified, parametric model of the game's math — not its real paytable. It exists to make the house edge visible over many sessions, so the numbers above are averages across thousands of runs, never a forecast of one.

This is math, not a prediction. Real sessions vary wildly, and no strategy changes a game's built-in house edge. Play for fun, set limits, and never bet more than you can afford to lose.

Where to play Big Tuna Bonanza

No matching casinos for your region yet

Casino availability depends on where you play from. We only show casinos that accept players from your country.

Compare Big Tuna Bonanza with other games

	Big Tuna Bonanza Score 75This game	Freaked Out Fish Score 88	Razor Returns Score 87	Fish Prawn Crab Bonanza Score 87	Bass Cash Christmas X UP Score 87
Identity
Studio	BGaming	Blue Guru Games	Push Gaming	Advant Play	Alchemy Gaming
Released	8/6/2025	9/26/2024	7/4/2023	7/29/2024	11/25/2024
Math
RTP	97.2%	96.02%	96.55%	97.02%	96.2%
Volatility	Medium volatility	High volatility	High volatility	Medium/High	High volatility
Max win	5,000×	30,000×	100,000×	20,000×	—
Format
Reels	5	7	5	6	5
Layout	5x3	7x7	5x5	6x4	5x5
Paylines	10	0	40	25	10
Min bet	0.5	0.15	0.2	0.1	0.1
Max bet	50	45	100	10	20
Features
Progressive	—	—	—	—	—
Wild symbol	✓	—	✓	✓	✓
Free spins	✓	✓	✓	✓	✓
Scatter symbol	✓	✓	✓	✓	✓
Multiplier	✓	✓	✓	✓	✓
Bonus game	✓	—	✓	✓	✓
Respins	—	—	—	—	✓

Every number is shown as a delta against Big Tuna Bonanza.

Comparing against

Big Tuna Bonanza

BGaming

RTP

97.2%

Max win

5,000×

Score

Fish Prawn Crab Bonanza

Bass Cash Christmas X UP

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