Quick verdict: Big Bass Amazon Xtreme is a high-volatility Pragmatic Play fishing slot from June 2023, with 5 reels, 10 paylines, a 96.07% RTP and a 10,000x max win. Unlike the original Big Bass Bonanza, fish cash can be collected in the base game with a multiplier of up to 50x, and the free spins multiplier climbs to 50x as well.
This page covers the Amazon Xtreme edition of the Big Bass series. For the 2020 original, see our Big Bass Bonanza review.
Demo tested on mobile by Jason Thompson on 8 October 2026: it loaded and worked.
Where we play Big Bass Amazon Xtreme
1win is our top-rated casino (9.9/10), with thousands of slots and a crypto withdrawal that took 15 minutes in our test.
Play at 1win18+. T&Cs apply. Not available in every country. Game libraries vary, so search the lobby for Big Bass Amazon Xtreme.
Big Bass Amazon Xtreme at a glance
| Provider | Pragmatic Play |
|---|---|
| Released | June 2023 |
| Layout | 5 reels, 3 rows, 10 fixed paylines |
| RTP | 96.07% (95.08% and 94.05% versions exist) |
| Volatility | High |
| Bet per spin | 0.10 to 250 |
| Max win | 10,000x your stake |
| Fish values | Up to 1,000x your bet each |
| Free spins | 10, retrigger for 10 more, multiplier up to 50x |
| Ante bet | Yes, more scatters for a higher stake |
| Bonus buy | Yes, 100x your bet (not in the UK and some other countries) |
| Mobile | Yes |
How does Big Bass Amazon Xtreme pay?
Wins pay left to right on 10 fixed lines. The fish are money symbols, each worth up to 1,000x your bet. In the base game, the fish on screen can be collected at random, with a random multiplier from 1x to 50x on the total. In the original Big Bass Bonanza, fish only pay in free spins.
How do the Big Bass Amazon Xtreme free spins work?
Three, four or five scatters award 10 free spins. If only two land, a random respin or hook can drag a third onto the reels. Before the spins start, a pick round can upgrade the feature with extra spins, guaranteed fish, fishermen already collected or removal of the lowest fish value, and four or five scatters give you a head start in it.
In the feature, the fisherman wild collects the value of every fish on screen. Every fourth fisherman retriggers 10 more spins and raises the multiplier on collected fish:
| Fishermen collected | Extra spins | Fish multiplier |
|---|---|---|
| 4 | +10 | 2x |
| 8 | +10 | 3x |
| 12 | +10 | 10x |
| 16 | +10 | 20x |
| 20 | +10 | 30x |
| 24 | +10 | 40x |
| 28 | +10 | 50x |
Random modifiers can also fire during free spins, such as extra money symbols, a hook that pulls in symbols and a waterfall that transforms them.
Big Bass Amazon Xtreme vs Big Bass Bonanza
| Feature | Amazon Xtreme | Big Bass Bonanza |
|---|---|---|
| Released | June 2023 | 2020 |
| Layout | 5×3, 10 lines | 5×3, 10 lines |
| RTP | 96.07% | 96.71% |
| Max win | 10,000x | 2,100x |
| Fish collect in base game | Yes, up to 50x | No |
| Free spins | 10 for 3 to 5 scatters | 10, 15 or 20 for 3, 4 or 5 scatters |
| Top multiplier | 50x | 10x |
| Bonus buy | Yes, 100x | No |
Amazon Xtreme trades a little RTP for a far higher ceiling. If you prefer a higher RTP and do not need a five-figure top prize, the original Big Bass Bonanza is the better fit.
Tips for playing Big Bass Amazon Xtreme
- Fish matter in the base game here, so a screen full of fish can pay without the bonus.
- The 50x level needs seven retriggers, or 28 fishermen, so most bonuses end on a lower step of the ladder.
- The Ante bet turns off the bonus buy while it is active, so you cannot use both at once.
- Check the RTP in the game rules: 96.07% is the top version, and casinos can run 95.08% or 94.05%.
Slots like Big Bass Amazon Xtreme
- Big Bass Bonanza: the 2020 original, with a 2,100x max win and fish that only pay in free spins.
- Big Bass Splash: a later sequel in the series, with a 5,000x max win.
- Bigger Bass Bonanza: another follow-up to the original, with a 4,000x max win.
- Best fishing slots: our guide to the whole genre, from Big Bass to Fishin’ Frenzy.
Where to play Big Bass Amazon Xtreme
Big Bass Amazon Xtreme is in the lobby of most casinos with Pragmatic Play slots; search for “Amazon Xtreme”, because the Big Bass series has more than a dozen games. 1win is our top-rated casino at 9.9/10 and paid our crypto withdrawal in 15 minutes in June 2026. New players can use promo code Ultragambler (see our 1win promo code page).
Big Bass Amazon Xtreme FAQs
What is the RTP of Big Bass Amazon Xtreme?
96.07%, according to Pragmatic Play, SlotCatalog and OLBG. Lower versions of 95.08% and 94.05% also exist.
What is the biggest win in Big Bass Amazon Xtreme?
10,000x your stake, according to SlotCatalog, OLBG and Casinos.com.
How does the multiplier trail work?
Every fourth fisherman wild you collect in free spins adds 10 spins and moves the fish multiplier up a step: 2x, 3x, 10x, 20x, 30x, 40x and finally 50x.
Can you buy the bonus in Big Bass Amazon Xtreme?
Yes, for 100x your bet, where the casino allows it. It is not offered in the UK.
When was Big Bass Amazon Xtreme released?
The wide release was 19 June 2023, after a short exclusive launch earlier that month.
Can I play Big Bass Amazon Xtreme for free?
Yes. The demo at the top of this page plays with free credits; it loaded when we tested it on 8 October 2026.
How we checked this
- 10 paylines, 96.07% RTP, the pick round and the rising multiplier: Pragmatic Play and SlotCatalog.
- Lower RTP versions, high volatility, 10,000x max win, the 2x to 50x trail, Ante bet and 100x bonus buy: SlotCatalog and OLBG.
- 0.10 to 250 bets, the base-game fish collect up to 50x and the 19 June 2023 release: Casinos.com and Gambling Insider. Reviews put the Ante bet at 50% extra per spin; Pragmatic’s launch news describes it differently, so we leave the cost out.
- Big Bass Bonanza figures: our Big Bass Bonanza review and Pragmatic Play.
- Figures last checked: 8 October 2026.
Important: check your local laws before you play
Online gambling laws differ from country to country, and in some places it is restricted or not permitted at all. Check that online gambling is legal where you live and that the casino accepts players from your country. You must be 18 or older (or the legal gambling age in your country, if higher). Only gamble with money you can afford to lose.
