- A fishing-themed slot with a high RTP
- Simple set of features including expanding reels
- Basic gameplay overall with a modest win potential
Bob Marlin Goes Deep is a fishing-themed slot from Yggdrasil Gaming, built around a 5-reel, 4-row layout that can expand up to 7 rows high for a maximum of 16,807 ways to win. By default, players spin with 1,024 ways to win and a nice 96.8% RTP (though some versions drop as low as 90.5%). The game is low volatility, offering a relaxed experience with simple mechanics and limited feature depth. Stakes range from £0.10 to £125, and the top win caps out at 3,905x the bet. While there are no wild symbols, players can trigger standard Free Spins or unlock Collection Free Spins for access to higher-paying symbols.
RECOMMENDED CASINOS TO PLAY Bob Marlin Goes Deep Slot
Bob Marlin Goes Deep Slot Bonuses and Features
Expanding Reels. Scatters landing on reels 1, 3, and 5 each add a new row to the bottom of the grid, expanding it up to a maximum of 7 rows. Expansion resets with every new base game spin.
Free Spins Bonus. Landing 3 scatters triggers 10 Free Spins played on the fully expanded 5×7 grid. No additional scatters or Collectable symbols appear during the bonus round.
Collectable Symbols & Collection Free Spins. Collectable fish symbols appear only on the 3 expanded rows in the base game. Players begin with 3 orange fish and must collect 5 of the same colour to trigger 5 Collection Free Spins. These spins are played on the 5×7 grid and feature super high-paying symbols matching the fish colour collected. You cannot trigger more features or contain scatters or collectable fish.
When multiple collections are completed at once, free spins are awarded in the following order: blue, green, purple, then orange. If both Collection and regular Free Spins are triggered simultaneously, regular Free Spins play first.
Conclusion
Bob Marlin Goes Deep slot from Yggdrasil delivers a simple, low-volatility fishing slot with clean visuals and an inviting RTP of up to 96.8%. However, its limited feature set and repetitive gameplay hold it back from making a strong impression. The Expanding Reels feel underutilised, and the lack of wilds or symbol cascades is a shame. While Collection Free Spins offer slightly better win potential with premium symbols, they’re not enough to elevate the experience beyond average. With a max win of 3,905x, the payout potential is decent for the volatility. Overall, this slot may appeal to casual players looking for a light, easy ride, but it lacks the depth and innovation to compete with others like it. For other games from this developer, you can also check out our review of Trickstar Spins slot here.
A Nice RTP But Not Much Else
Pros
- 96.8% RTP.
- Clean design.
Cons
- Not many features.
- Quite a low win potential.