Hitting the Deep Waters with Bob Marlin
Yggdrasil Gaming takes us on an undersea adventure once more, but this time our trusty angler Bob Marlin ventures into uncharted depths. The moment you launch the game—whether at luckycola or any other platform—Bob’s bright smile and trusty fishing rod welcome you onto a 5×4 grid that can swell to a colossal 5×7 matrix. It’s a refreshing twist on the aquatic theme we’ve seen in Yggdrasil’s Golden Fish Tank series, adding a playful vibe that resonates well with casual and seasoned players alike.
Expanding Reels: More Rows, More Wins
In the base game, landing scatter symbols on reels 1, 3, and 5 will each add an extra row at the bottom, expanding the grid by up to three rows per spin. This unique reel-growth mechanic not only boosts your ways to win from 1,024 up to 16,807 but also stokes anticipation as each spin could unlock new potential. Regular players at luckycola praise how each additional row changes the dynamics of every subsequent spin.
Betting Range and Volatility
Bob Marlin Goes Deep caters to everyone, from penny-slot explorers to high-roller anglers. Stakes start at just €0.10 and stretch up to €125 per spin, making it a versatile choice whether you’re chasing small but frequent wins or aiming for bigger payouts. With a standard RTP of 96.8% (and an alternative 90.5% version), the low volatility nature of this title keeps the action flowing with steady, if modest, returns.
Collectible Fish and Collection Free Spins
Unique to this slot are the collectible fish symbols—blue, green, purple, and orange—that land only in the expanded rows. Collect five of the same color to trigger Collection Free Spins, where only the super high-paying symbols matching your fish collection appear. This feature adds an engaging layer of strategy, especially for luckycola users who enjoy tracking their collections and timing their bets to maximize respin opportunities.

Standard Free Spins on a Full Grid
Scatters also unlock a more traditional Free Spins mode: land three and enjoy 10 spins on the fully expanded 5×7 grid. Although this round doesn’t feature collectible fish or scatters, it guarantees access to all seven rows, offering enhanced win lines and the familiar excitement of successive free rounds.
Symbol Paytable and Payouts
The paytable balances low-value J-A royals with thematic high-value icons—cans, hooks, reels, and tackle boxes. Five matching royals pay 0.6× your stake, while five high-value symbols range from 0.8× to 1.4×. In Collection Free Spins, super high-pays leap to 2.8×–4×, creating tense moments as each spin might land that top payout. Many luckycola players enjoy comparing hit frequencies to optimize their play style.
Sound, Graphics, and Mobile Play
Although the in-game graphics aren’t Yggdrasil’s most stunning work, Bob Marlin Goes Deep compensates with a cheery soundtrack and buoyant sound effects. The mobile version runs smoothly, with crisp icons and responsive controls, making it a reliable pick on smartphones and tablets. If you’re logging in via luckycola’s app, you’ll find the game loads quickly and maintains audio clarity even on slower connections.
No Wilds, No Problem
Unlike many modern slots, Bob Marlin Goes Deep foregoes traditional wild symbols. Instead, its focus on expansion and collectible mechanics keeps gameplay streamlined. This minimalist approach appeals to players at luckycola who prefer less cluttered reels and a clear understanding of how each feature impacts their potential win.
Bonus Buy Option (Where Available)
In jurisdictions that allow it, you can purchase direct entry into Collection Free Spins, bypassing the base game grind. The cost correlates to your current stake, offering a quick shot at the highest-value symbols. It’s a handy feature for luckycola bettors looking to fast-track the excitement without waiting for scatters to align naturally.
Comparing with Other Fishing Slots
While not as feature-packed as 4ThePlayer’s 4 Fantastic Fish series, Bob Marlin Goes Deep brings its own charms—particularly its expansible grid and collectible fish. For a laid-back session with occasional big-win potential, it stands out among sea-themed slots, especially for luckycola members seeking variety beyond collector-style mechanics.
Final Thoughts: Is Bob Marlin Goes Deep for You?
This slot may not reinvent the fishing genre, but its approachable volatility, engaging expansion feature, and clear paytable make it a solid choice for casual play. If you enjoy lighthearted aquatic themes and steadier returns, you’ll feel right at home casting your line on luckycola. Otherwise, players chasing ultra-high volatility might look elsewhere. Either way, Bob Marlin offers a pleasant voyage under the waves—no wetsuit required.
