Bob Marlin Goes Deep

Bob Marlin Goes Deep is Yggdrasil's take on the fishing slot genre, and it swaps the usual "reel in a money symbol" collector mechanic for something a little different: an expanding grid built around growing win ways rather than hauling in cash-filled catches.

A day out on the water

The game opens with a cheerful home screen of Bob steering his boat through fish-filled waters under a bright blue sky, and that same friendly energy carries into the base game. It's not the most jaw-dropping visual showcase Yggdrasil has ever produced, but the atmosphere is warm and easy to settle into, which suits a slot that's clearly aimed at relaxed, low-pressure spinning rather than white-knuckle tension.

How the reels work

Bob Marlin Goes Deep plays out on a 5x4 grid that starts with 1,024 ways to win and can expand all the way up to a 7-row-high layout, at which point the ways total balloons to 16,807. Low-paying J-A royals sit alongside high-paying cans, hooks, reels, and tackle boxes on the regular paytable, while blue, green, purple, and red super high-paying symbols are reserved exclusively for the Collection Free Spins round. A five-symbol low pay win is worth 0.6x the stake, highs pay 0.8x to 1.4x, and the super highs jump to 2.8x-4x when they finally show up. There are no wild symbols anywhere in the game, so every win here comes from matching the paytable directly.

RTP and volatility

Bob Marlin Goes Deep carries a 96.8% RTP in its default configuration, with an alternative 90.5% build also in circulation, so it's worth checking which version your casino is running. Yggdrasil has classed this one as low volatility, and the 20.67% hit frequency backs that up — you're looking at a win roughly once every five spins on average, which makes for a smoother, more frequent-payout experience than most fishing slots offer.

Max win and stakes

The ceiling here is 3,905x the bet, a modest max win by modern standards but entirely in keeping with a low-volatility design that prioritises steady action over lottery-style jackpot chasing. Stakes run from 10p/c up to $/€125 per spin, giving a wide enough range for cautious and confident players alike.

Verdict

Bob Marlin Goes Deep won't suit anyone hunting five-figure multipliers, but as a gentle, expanding-grid fishing slot with a genuinely likeable mascot, it does its job well. If low volatility and frequent small wins sound like your kind of session, the free demo at johnessyslots is the easiest way to see whether Bob's fishing trip is worth joining for real money.