Big Tuna Bonanza review: 97.2% RTP, 5,000x max win, 216,708 public bets tracked
By BGaming
Free demo coming soon
Where it’s playedBig Tuna Bonanza review: a fishing collect slot where every 4th Wild unlocks spins at x2, x3 and x10
Big Tuna Bonanza is BGaming’s fishing slot, now listed on BGaming’s site as Big Boat Big Catch under the game ID BigTunaBonanza. It plays on 5x4 reels with 10 paylines. Declared RTP is 97.2%, BGaming rates the volatility Very high and the max win is 5,000x.
How Big Tuna Bonanza pays
In the base game, fish prize symbols carry values from x1 to x10 the bet. Three or more on a payline pay the sum of their values. Regular symbols pay left to right on the 10 lines. BGaming lists a hit rate of 1 in 3.2 spins.
Big Tuna Bonanza free spins
Land 3, 4 or 5 bonus symbols for 10, 15 or 20 free spins. Wilds land only in this round, and each Wild collects the value of every fish on reels 2 to 5. Every 4th Wild adds 10 spins with a multiplier on every win, x2 for the first retrigger, then x3, then x10. BGaming puts the free spins at 1 in 205.3 spins.
Big Tuna Bonanza buys
You can buy the free spins at a price shown on the button, and it scales with your bet. Chance x2 raises the bet slightly and buys a double chance at free spins. You can’t run both at once.
Who Big Tuna Bonanza is for
It suits players who like fisherman collect bonuses and want a high declared RTP. The x10 stage needs 12 Wilds in one round, so the big multipliers come only in a long bonus.
Pros
- 97.2% declared RTP
- Each Wild collects every fish on the reels
- Retriggers climb to x2, x3 and x10
- Buy Bonus and Chance x2
Cons
- Very high volatility
- The x10 stage needs 12 Wilds in one round
- Base game is plain line wins and fish prizes
Players who like fisherman collect bonuses with stepped multipliers.
You want base game features beyond line wins and fish prizes.
Big Tuna Bonanza RTP and specs
Specs as published by BGaming game page: Big Boat Big Catch (game ID BigTunaBonanza) · BGaming game rules: BigTunaBonanza, checked October 4, 2026.
Big Tuna Bonanza at a glance
- BGaming
- 216,708
- Since Jul 12, 2026
- 5
- Coming soon
How Big Tuna Bonanza paid in the public feeds, Sep 16–23
Cloudbet’s feed logged 18,769 bets on Big Tuna Bonanza, and 30.4% of them paid something. The biggest multiplier was 107x at Cloudbet.
Each casino’s list holds its games with 1,000+ bets in the window. Payout ÷ stake is a feed ratio, not the game’s RTP. Feeds that may show only some bets, only winning bets or no USD value aren’t measured here.
Big Tuna Bonanza didn’t make any casino’s game board for Sep 16–23, so there’s no casino-by-casino table. The bet count above covers every public bet we’ve tracked on it since July 12, 2026.
Big Tuna Bonanza FAQ
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