Few slot franchises have grown as fast as Big Bass. Since the original Big Bass Bonanza hooked players in 2020, Reel Kingdom and Pragmatic Play have turned one fishing idea into dozens of titles: neon city nights, Amazon expeditions, haunted Halloween lakes, hold-and-spin reskins and the high-ceiling 1000 series. With so many versions on the lobby shelf, the numbers on the paytable become the only honest way to compare them.
That is exactly what this review does. Instead of describing each game in isolation, it looks at the shared engine under the hood, explains what RTP settings mean in practice, and weighs which version actually returns the most money to a careful player.
How the fishing formula actually works
Every game in the series runs on the same skeleton. Low-value symbols pay modest line wins, while the fisherman and the fish symbols drive the real action. Fish carry random cash values printed on them, and during the free spins round the fisherman wild appears to collect every fish visible on the reels, adding their values to your total. Collecting fishermen also unlocks a ladder of perks.
The free spins round is triggered by landing three or more scatter symbols, and the count matters:
- Three scatters award 10 free spins.
- Four scatters award 15 free spins.
- Five scatters award 20 free spins.
Inside the bonus, every fourth fisherman collected increases the multiplier applied to fish collections, starting at x2 and climbing to x3 and then x10 in the classic versions. Reaching each tier also adds extra free spins, so a good run of symbols can snowball. This collection-and-upgrade loop is the reason the series feels the same from game to game, and it is also why bonus rounds dominate the results: most of the game’s return sits inside that feature, not in the base game.
What RTP really tells you here
Return to player is the share of all wagered money a slot pays back over millions of spins. A game with 96.7% RTP keeps roughly 3.3 cents from every pound or dollar bet in the long run, while individual sessions swing wildly around that average. Volatility describes how wide those swings are, and every Big Bass title sits firmly on the high-volatility side, which means long quiet stretches interrupted by rare, large payouts.
The crucial catch is that Big Bass games are shipped with several RTP settings. The original Big Bass Bonanza, for example, can run at its headline 96.71% or be configured by the operator down to 95.67% or lower. The same cabinet, the same fisherman, a measurably worse deal. The only reliable way to know what you are playing is to open the information or help screen in the game itself, where the active RTP is always listed. Checking it takes ten seconds and routinely saves players a percentage point or more.
The main versions compared
With the mechanics and the RTP caveat in mind, the series starts to sort itself out. Each release tweaks one of three dials: the ceiling of the top prize, the volatility of the bonus, or the extras layered around the core loop.
| Game | Release | RTP (best setting) | Max win | Grid and lines |
|---|---|---|---|---|
| Big Bass Bonanza | 2020 | 96.71% | 2,100x | 5×3, 10 lines |
| Bigger Bass Bonanza | 2021 | 96.71% | 4,000x | 5×4, 12 lines |
| Big Bass Splash | 2022 | 96.71% | 5,000x | 5×3, 10 lines |
| Big Bass Amazon Xtreme | 2023 | 96.07% | 10,000x | 5×3, 10 lines |
| Big Bass Hold & Spinner | 2023 | often 94–96% by config | 10,000x | 5×3, 10 lines |
| Bonanza 1000 / Splash 1000 | 2024–25 | around 96.5% | 20,000x–25,000x | 5×3, 10 lines |
Read this as a trade-off curve rather than a ranking. The early games offer the best long-term return but a modest ceiling, while the newer entries stretch the max win to five figures and take a slice off the RTP in exchange. Amazon Xtreme illustrates the pattern clearly: its default return sits noticeably below the original’s, yet it dangles a 10,000x top prize, roughly five times the classic cap.
Features that separate one version from another
Beyond the shared skeleton, the series has grown a set of modifiers and extras that genuinely change the texture of play. Knowing which of these are on the menu helps you pick a version that matches your patience and budget:
- Random base-game modifiers in Big Bass Splash, such as extra fish, more fishermen, hook symbols that pull scatters onto the reels, dynamite explosions that turn symbols into fish, and a helicopter dump that does the same in bulk.
- The ante bet in newer titles, which raises your stake by half to double the scatter frequency, plus the bonus buy that charges a lump sum, usually 100x the bet, for guaranteed entry to free spins.
- Pre-bonus pick rounds, most notably the Amazon Chest game in Big Bass Amazon Xtreme, where you choose chests that can award extra spins, wilds or a boosted multiplier level before the bonus even starts.
- The 1000-series twist, in which individual money fish can be worth up to 1,000x the bet each, making a single fisherman catch capable of reaching the enormous new caps.
These additions rarely change the underlying math dramatically, but they change the journey. A Splash session without the feature feels different from a Bonanza session, and the ante and buy options move more of the game’s return behind a paywall that only makes sense in disciplined doses.
Which version pays best
The honest answer depends on what “pays best” means to you. If it means the highest long-term return, the mathematics favor the classics: Big Bass Bonanza, Bigger Bass Bonanza and Big Bass Splash all reach 96.71% at their best configuration, which beats Amazon Xtreme and typically beats the Hold & Spinner settings too. If it means the biggest possible single payout, the 1000 series wins on paper, with the Splash 1000 ceiling of 25,000x towering over the original’s 2,100x.
For a sensible path through the series, this order works well:
- Play Big Bass Splash at a casino listing the 96.71% version, because it matches the original’s return while adding modifiers and a better ceiling.
- Move to Bigger Bass Bonanza if you want more reels and a smoother ride through its 4,000x potential.
- Reserve the 1000 titles for occasional sessions with a small, disposable stake, since their volatility is extreme and their RTP is usually no better than the classics.
Amazon Xtreme deserves a mention as the pick for players who enjoy pre-bonus decision-making, even though the lower return means the price of its 10,000x dream is higher. Hold & Spinner suits those who prefer hold-and-spin action to the fisherman formula, but it is the weakest choice for value-focused players.
Playing smart across the series
Two habits matter more than any game choice. First, budget for volatility: on high-variance slots, a realistic bankroll is at least 100 to 200 times your stake per session, because dozens of dead spins between bonuses are not bad luck, they are the design. Second, treat the bonus buy as entertainment spending, not strategy. Paying 100x your stake guarantees access to the feature but does not improve its odds, and over many purchases the cost compounds faster than most players expect.
Session length is the other silent factor. Short sessions exaggerate variance, so a 20-minute spin on a high-volatility fishing slot can feel rigged in either direction. Longer play pulls results toward the published RTP, which is precisely why comparing settings before you sit down is worth the small effort.
The verdict in one cast
The Big Bass series succeeds because its core loop is transparent, fast and easy to read, and every new version is a remix rather than a reinvention. The original remains the benchmark, Splash is arguably the best all-round package, Bigger offers a friendlier grid, and the 1000 titles chase headlines instead of returns. Check the active RTP, size your bankroll for the swings, and the fisherman will treat you about as fairly as any modern slot can.