Slot review
Merkur
Fishin’ Frenzy demo: why Britain’s favourite fishing slot has the lowest RTP of any slot here
The slot that invented the fisherman collect mechanic, running below the industry norm and with no retriggers at all.
Fishin' Frenzy reports 96.12%, the lowest RTP of any slot reviewed on this site, and its free spins cannot be retriggered at all. For the most played fishing slot in Britain, both are worth knowing before you spin it.
Play Fishin' Frenzy free
Loads from slotslaunch.com when you press play. Nothing is requested from them before that. 18+. Demo play is not a guide to real-money results.
Key facts
| RTP | 96.12% |
|---|---|
| Volatility | Medium |
| Minimum bet | £0.20 |
| Maximum bet | £400 |
| Paylines / ways | 10 fixed lines |
| Reels | 5 |
Pros and cons
- One feature that does one thing, with nothing to learn and nothing compounding
- The fisherman collect mechanic every rival has since copied, in its original form
- 20p minimum across ten lines is 2p a line, genuinely cheap at the bottom
- Stakes run to £400 a spin, roughly double most modern slots
- Predictable rounds: the spins you trigger are the spins you get
- 96.12% is the lowest RTP of any slot reviewed here, and well under the 96.5% convention
- Free games cannot be retriggered, where Big Bass Bonanza retriggers three times
- The lower return is not funding a bigger ceiling, it is simply a lower return
- Prizes pay on line bet rather than total stake, which makes the paytable easy to misread
- No tumble, no expanding grid, nothing the newer fishing slots have added since
On this page
Fishin’ Frenzy is one of the most played slots in Britain. It is on every high street bookmaker’s terminal lineup and every UK casino’s front page, it has spawned more sequels than any other British slot, and its fisherman is probably the most recognisable character in the category.
It also has the lowest RTP of any slot reviewed on this site. Only Crazy Time, a live game show rather than a slot, states less at 96.08%.
96.12%, and why that number stands out
Most modern slots cluster tightly around 96.5%. That is not a rule, it is a convention, and studios generally stay near it because operators expect it. Fishin’ Frenzy sits well below.
| Game | RTP | House edge |
|---|---|---|
| Big Bass Bonanza | 96.71% | 3.29% |
| Sweet Bonanza | 96.6% max | 3.4% |
| Sugar Rush 1000 | 96.53% | 3.47% |
| Buffalo King Megaways | 96.52% | 3.48% |
| Fishin’ Frenzy | 96.12% | 3.88% |
The gap looks small written down. In practice, 96.12% against 96.71% means the game keeps about 18% more of your stake over time than Big Bass Bonanza does. On £1,000 put through, the difference in theoretical return is roughly £6. Not ruinous, but it is real, it is permanent, and it runs the wrong way for the most popular fishing slot in the country.
What makes it interesting is that Fishin’ Frenzy is not a modern game trying to buy a huge ceiling with a thin middle. It is a plain 5 reel, 10 line slot from an older design tradition. There is no tumble mechanic, no expanding grid, no 25,000x headline. The lower RTP is not funding a spectacular top end. It is just a lower RTP.
Free games cannot be retriggered
This is the other line worth pulling out, and it is stated flatly in the game’s own text: free games cannot be retriggered.
Set that against the game it is most often compared to. Big Bass Bonanza retriggers three times, and each retrigger raises the collection multiplier to 2x, then 3x, then 10x. The entire top end of that game lives in those retriggers.
Fishin’ Frenzy gives you the spins you triggered and that is the round. Whatever the fisherman collects, he collects inside that fixed window. It makes the feature far more predictable, which some players prefer and which is also the reason the game’s ceiling is nowhere near its rivals’.
The base game

Ten paylines, five reels, wins from the left except the scatter, which pays from any position. Prizes are multiplied by the line bet rather than the total stake, which is the older convention and worth knowing when you read the paytable inside the game: a prize of 100 on a 12p line bet is £12, not 100 times your £1.20 stake.
The fisherman is the wild and the collector. The fish carry cash values. The mechanic that made this game famous, and that Pragmatic Play later borrowed wholesale for Big Bass, is the fisherman landing during free spins and collecting every fish value on screen.
The stake range is the unusual part
| As reported by the game server | |
|---|---|
| RTP | 96.12% |
| Reels and lines | 5 reels, 10 lines |
| Minimum total stake | £0.20 |
| Maximum total stake | £400.00 |
| Free spin retriggers | None |
A £400 maximum on a ten line slot is high. Most of the games on this site stop between £240 and £300, and they are busier, more modern products. Fishin’ Frenzy will take twice the stake of Sugar Rush 1000 on a spin.
The 20p floor is the same as most, and on ten lines that is 2p a line, so the game is genuinely cheap at the bottom. It is the ceiling that is out of step, and it exists because this game inherited its stake ladder from the betting shop terminals where it made its name.
Playing the demo above
Blueprint Gaming’s own free play build, loaded straight from the studio. Play money, no account, nothing real at stake.
Fishin’ Frenzy is a good game to sit with in a demo precisely because it is simple. There is one feature, it does one thing, and nothing compounds. Ten minutes tells you whether you find the fisherman satisfying or slow, and that is genuinely the whole decision.
What the demo cannot tell you is variance, and it cannot tell you the RTP of the build your casino has licensed, which is the point of the next section.
Where these numbers come from, and one caveat that matters
The RTP, stake limits and paytable structure on this page were read from the game’s own initialisation response, which is the data Blueprint’s server sends to the client when the game loads. The no retrigger rule comes from the game’s own award text. Both were read on 20 August 2026.
Now the caveat, and it is a real one. This is the build Blueprint serves on its public demo service, with no operator jurisdiction attached. Studios supply the same title to different operators in different RTP configurations, and 96.12% is what this build reports, not a guarantee about the version your casino runs.
So do the thing we say on every page: open the information screen inside whichever client you are actually playing and read the RTP there. It takes two taps. On a game already running below the industry norm, it matters more here than almost anywhere else. There is a fuller explanation in what a slot’s three numbers actually tell you.
Common questions
What is the RTP of Fishin' Frenzy?
The demo build reports 96.12%, which is the lowest of any slot reviewed on this site and noticeably below the informal 96.5% industry convention. Studios supply the same title to operators in different RTP configurations, so check the information screen inside whichever client you are playing.
Can you retrigger free spins on Fishin' Frenzy?
No. The game's own award text states plainly that free games cannot be retriggered. That is a real difference from Big Bass Bonanza, which retriggers three times and raises its collection multiplier to 2x, 3x and then 10x along the way.
How does the fisherman work?
The fisherman is the wild and the collector. Fish symbols carry cash values, and when the fisherman lands during free spins he collects the values of the fish on screen. This is the mechanic Pragmatic Play later built the entire Big Bass family around.
How much can you bet on Fishin' Frenzy?
From 20p to £400 a spin across ten fixed lines. That £400 ceiling is unusually high for a game of this age and complexity, and it comes from the stake ladders of the betting shop terminals where the game made its name.
Is Fishin' Frenzy the same as Big Bass Bonanza?
No, though the resemblance is not accidental. Fishin' Frenzy came first and established the fisherman collect mechanic. Big Bass Bonanza is Pragmatic Play's take on the same idea, with retriggers, a collection multiplier ladder and a higher RTP.
Can I play Fishin' Frenzy free?
Yes. The demo on this page is Blueprint Gaming's own free play build. No account, no deposit, and nothing real can be won or lost in it.