


RTP
97.1%
Volatility
High (5/5)
Max Win
5,000x
Big Bass Boom is a high (5/5)-volatility online slot from Pragmatic Play with an RTP of 97.07% and a maximum win of 5,000x.
Page updated July 2026
Big Bass Boom is Pragmatic Play's latest addition to its sprawling fishing-themed franchise, built on the series' familiar 5-reel, 3-row structure with 10 fixed paylines. It carries a strong 97.07% RTP, a high 5-out-of-5 volatility rating, and a maximum win of 5,000x the stake.
Details on Big Bass Boom's specific bonus mechanics haven't been fully documented yet, but the numbers alone tell a fairly consistent story for anyone familiar with the series. A 97.07% RTP sits comfortably above the market average and above several of this franchise's own entries, making it one of the more player-friendly return figures in the current Big Bass lineup. Given the name, expect the usual angling iconography — a fisherman character, tackle-box symbols, and the series' trademark Money symbol collection mechanic — likely wrapped in a slightly punchier, more explosive visual theme than some of the calmer entries in the range.
Stakes run from 10p up to £250 a spin, keeping the game accessible to a wide range of bankrolls. As with virtually every Big Bass release, an ante bet option is likely available for players wanting improved odds of triggering the bonus round in exchange for a higher stake, though exact terms should always be confirmed on the in-game paytable before playing.
A 5-out-of-5 volatility rating puts Big Bass Boom among the more aggressive entries in the series. Expect longer stretches between significant wins, offset by the potential for the free spins round — almost certainly built around collecting Money symbol values via a wild fisherman character, in keeping with the franchise's long-standing formula — to deliver a meaningfully larger payout when it does land.
The 5,000x ceiling is right in line with a large portion of the Big Bass catalogue, a solid if unspectacular top prize compared with some of the series' higher-variance Megaways-style entries that push into five-figure territory.
Big Bass Boom looks, on paper, like another confident entry in an enormous and still-growing franchise, offering an above-average RTP wrapped in the high-volatility, Money-symbol-driven gameplay the series is known for. Fans of the format who prioritise return over sheer novelty should find plenty to like here. The best way to judge whether the boom lives up to the name is to spin it up on the free demo at johnessyslots before deciding whether it earns a spot in your real-money rotation.
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Big Bass Boom has an RTP (return to player) of 97.07%. RTP is the theoretical percentage of total stakes a slot returns to players over a very large number of spins, as published by Pragmatic Play — individual sessions can land far above or below it.
Big Bass Boom is rated high (5/5) volatility. High-volatility slots pay out less often, but wins tend to be bigger when they land — expect longer dry spells and larger swings to your balance.
The advertised maximum win for Big Bass Boom is 5,000x. Max wins are extremely rare by design — treat them as a ceiling, not an expectation.
Big Bass Boom is developed by Pragmatic Play and was released in Sep 30, 2024.
Verified Data via Johnessy AI

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