Bob Marlin Goes Deep Slot Review
Free demo, RTP, volatility and max win
8.2Value score · Very good · how it works
Bob Marlin Goes Deep review: Yggdrasil's 2025 fishing slot with expanding reels and free spins, Low volatility and three RTP versions from 96.8% to 90.5%.
- #2by value of 320 Yggdrasil slots
- #254by RTP of 3,708 slots
- #397by value of 3,708 slots
Play Bob Marlin Goes Deep free: demo, no sign-up
Free play money from Yggdrasil's official demo. 18+. No deposit and no account; a demo does not predict real results.
Basic information
| Software | Yggdrasil |
|---|---|
| Release year | 2025 |
| Theme | Fishing slots |
| RTP | 96.8% | 94% | 90.5% |
| Volatility | Low |
| Max win | Not published |
| Hit frequency | Not published |
| Features | Free spins |
| Game type | Slot |
| Data verified | 2026-09-28 |
Source: Yggdrasil game page; RTP database by toolsgambling.com (CC BY 4.0); image: Yggdrasil promotional image from the official game page. How we collect data · Report a mistake
Bob Marlin Goes Deep review
Yggdrasil sends Bob Marlin underwater in this 2025 fishing slot. The studio's pitch is short: the deeper you go, the more the reels expand, and catching five of the same fish sets off a round of free spins. The pack holds little rule detail beyond that, so the most useful facts here are the numbers. The game is rated Low volatility, and it exists in three RTP versions, which is the part worth understanding before you play.
What the studio tells us
The theme is a fishing trip with a tackle box and an ocean full of treasure. The reels grow as the dive goes deeper, which gives the game a progression feel rather than a fixed grid. According to Yggdrasil, five matching fish caught together unleash a wave of free spins, and the biggest catches are saved for that round.
That is the full extent of the published rules in the text we hold. There is no list of symbols, no free spin count and no stated multipliers, so this review does not guess at them. The free official demo is the best way to see how the expanding reels behave.
Three RTP versions
Bob Marlin Goes Deep has three RTP versions on record: 96.8%, 94% and 90.5%. The headline figure is 96.8%, with a house edge of 3.2%. The 94% version has a house edge of 6%, and the 90.5% version a house edge of 9.5%.
Per $1,000 wagered, the three versions cost about $32, $60 and $95 on average. The lowest version therefore costs nearly three times as much as the headline one. Our data does not say which version a given player will meet, so check the game's own info screen before you rely on any figure.
Session costs
At the headline RTP, 100 spins cost about $0.64 at a $0.20 bet, $3.20 at $1 and $16 at $5, which is $500 wagered. At the lowest version, the same sessions cost $1.90, $9.50 and $47.50. The Low volatility label suggests small, frequent returns, but the table above is what the game keeps on average, whatever the swings.
The catalogue does not publish a max win for this game, and the studio text does not state one.
Similar Low-volatility games
Several recent games share the Low label. Alice in Lollyland lists 96.1% from 2025. Frontier Lock and Load and Wild Joker Blitz list 96% from 2025. From 2026, 3 Piggies of Bank, 3 Wonders Santa On The Beach and Diva Las Vegas also list 96%. At 96.8%, the headline version of Bob Marlin has the highest RTP of that group.
Pros
- Low volatility label
- 96.8% headline RTP with a 3.2% house edge
- Reels expand as the dive goes deeper
- Free official demo available
Cons
- Two lower RTP versions of 94% and 90.5% exist
- No max win published
- Few rules published, so the free spins and symbols are not detailed
Verdict
Bob Marlin Goes Deep is a Low volatility fishing slot whose most important feature is a number: the RTP version in use. At 96.8% the house edge is 3.2%, but at 90.5% it reaches 9.5%, nearly three times the cost. With so few published rules and no max win, use the free demo to judge the expanding reels and always check which version is running.
Sources: Yggdrasil official game page; RTP, volatility and max win from the open Slot RTP Database.
Slots like Bob Marlin Goes Deep
Bob Marlin Goes Deep RTP versions
3 RTP versions of Bob Marlin Goes Deep are recorded. Casinos choose which one to run, so the number you get depends on where you play. Each bar shows what that version keeps on average per $1,000 wagered.
- 96.8%Highest $32 lost per $1,000
- 94% $60 lost per $1,000
- 90.5%Lowest $95 lost per $1,000
Cost of 100 spins
| Bet | Wagered | Average cost at 96.8% | At 90.5% |
|---|---|---|---|
| $0.20 | $20 | $0.64 | $1.90 |
| $1 | $100 | $3.20 | $9.50 |
| $5 | $500 | $16 | $47.50 |
Averages computed from the published RTP; real sessions vary widely around them. RTP calculator
Bob Marlin Goes Deep max win, volatility & stats
- Value score
- 8.2 / 10
- Lost per $1,000 (average)
- $32
- Max win at $1 bet
- –
- Wins on average
- –
Percentiles compare this game with the 3,708 games in the catalogue. Max win: not published.
