Big Tuna Bonanza Slot – Demo & Review
Written by Secod on 08-07-2025 — Updated on 03-10-2025
Best Casinos to play Big Tuna Bonanza for real money
Big Tuna Bonanza by BGaming Slot Overview
Big Tuna Bonanza by BGaming takes players into a vibrant undersea adventure, offering a fish-themed slot that brings familiar elements of Big Bass Bonanza and Fishin’ Frenzy into its own world. BGaming creates its own version of these popular titles, providing a similar yet distinct fishing experience.
The slot features a Free Spins bonus, Wild symbols that collect Prize symbols and the potential for substantial wins. While it doesn’t introduce groundbreaking mechanics, it’s a solid choice for fans of classic fishing-themed slots. Try the free demo on BonusTiime and see if you can reel in some big wins.

Big Tuna Bonanza Slot Specifications
Dive right into Big Tuna Bonanza, a reel adventure with 5 reels, 10 paylines and plenty of ways to hook impressive wins under the sea’s surface.

RTP (Return to Player)
Big Tuna Bonanza boasts an RTP of 97.20%, ranking it highly for fairness and offering a solid return to players over time.
Volatility
This slot navigates through medium volatility, creating a balanced gameplay experience where wins can be steady and occasionally big.
Max Win
Chase the thrill of a 5,000x your stake max win, showcasing Big Tuna Bonanza’s potential for substantial payouts.
Theme
With a theme reminiscent of *The Big Fish*, Big Tuna Bonanza immerses players in an aquatic world teeming with colorful sea creatures and hidden treasures.
Big Tuna Bonanza Slot Features
Big Tuna Bonanza includes a payout-triggering Wild Symbol, collectible Prize Symbols, retriggering Free Spins with increasing multipliers, a Chance x2 bet for improved bonus odds and a Feature Buy for instant access.

Wild Symbol
The Wild Symbol substitutes for all symbols except the Scatter and Prize Symbols. It also pays 1x, 3x or 50x the bet for 3, 4 or 5 wilds in a winning combination.
Wilds appear only during Free Spins, where they also collect all visible Prize Symbols. This dual function makes them essential for building both base payouts and feature-specific rewards.

Prize Symbols
Prize Symbols depict green, red or purple fish with values from 1x to 10x the bet. In the base game, landing three or more in a win awards the total of their displayed values.
During Free Spins, Prize Symbols are collected by wilds. This shifts their role from forming line wins to providing instant rewards via collection, making wild placement crucial for maximizing payouts.
Free Spins
Landing 3, 4 or 5 Scatter symbols awards 10, 15 or 20 Free Spins. All wilds are collected on a trail, with every fourth wild retriggering the feature and awarding +10 spins plus an increased prize multiplier.
At 4, 8 and 12 collected wilds, multipliers increase to x2, x3 and x10 respectively. After reaching 12, no further retriggers are possible, but the x10 multiplier applies to all collected prize values.
Chance x2
Activating Chance x2 costs an extra 50 percent of the bet and increases the odds of triggering Free Spins. This mode plays with an RTP of 97.2 percent.
It is an optional risk-enhancement feature designed for players seeking more frequent bonus rounds without altering base gameplay structure.
Buy Free Spins
The Feature Buy instantly triggers the Free Spins feature for 100x the bet. This option plays with an RTP of 97.2 percent, offering direct access to retriggers and multipliers without waiting for scatters.

Big Tuna Bonanza Slot Review
Big Tuna Bonanza takes players into a bright underwater setting, where colorful fish and smooth animations create a relaxed fishing-inspired experience. The visuals are appealing, with a light and cheerful tone that keeps spins easy on the eyes.
Gameplay sticks to familiar fishing slot mechanics, offering medium volatility and a high RTP for steady returns. While it doesn’t introduce groundbreaking features, it maintains solid pacing, making it suitable for those who prefer straightforward play over complex bonuses.
Overall, Big Tuna Bonanza offers a pleasant, no-frills experience. There’s nothing particularly new or inventive, but its simplicity and polished presentation make it a decent option for casual fishing slot fans looking for a light, steady game.

Big Tuna Bonanza Overall Rating
5.6/10
Big Tuna Bonanza Slot FAQ
How Does The “Chance x2” Feature Enhance The Game?
The “Chance x2” feature, when activated, increases the likelihood of triggering the Free Spins feature. It costs an additional 50% of the bet, making it a valuable option for those who prefer more frequent bonus rounds and a heightened chance to unlock big rewards.
What Happens When Prize Symbols Are Collected By Wilds?
During Free Spins, Prize Symbols, which would usually contribute to line wins, are instead collected by Wild Symbols. This allows for instant payout rewards and plays a critical role in maximizing your potential earnings during the bonus round.
What Are The Benefits Of Collecting Wild Symbols During Free Spins?
Every fourth Wild Symbol collected during Free Spins triggers a retrigger with an additional +10 spins. As more Wilds are collected, the multipliers increase, from x2 at 4 Wilds, to x10 at 12 Wilds, further boosting the prize values of collected Prize Symbols.
Can I Access The Free Spins Directly Through The Feature Buy?
Yes, the Feature Buy option lets players skip the wait for Scatter symbols, providing instant access to the Free Spins round for 100x the bet. This option guarantees entry into the bonus round, along with multipliers and retriggers, offering an accelerated gameplay experience.
How Are Wild Symbols Used To Boost Payouts?
In addition to substituting for other symbols, Wild Symbols play an essential role in increasing payout potential by collecting Prize Symbols. They can also trigger multiplier growth and boost winnings, with payouts reaching up to 50x when 5 Wilds appear in a winning combination.
Slot Rating
Quick informations
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RTP: 97.2%
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Provider: BGaming
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Volatility: Medium
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Max Win: 5,000 x
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Popularity: Low
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Release Date: 07-08-2025
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Free Spins: Yes
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Min Bet: €0.1
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Max Bet: €50.0
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Autoplay: Yes
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Gamble Feature: No
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Available on Mobile: Yes
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Bonus Buy: Yes
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Features:
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Themes:
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