Fatter Fish Festival Slot Review 2026

Fatter Fish Festival Slot Quick Overview

Fatter Fish Festival slot was published on December 2025, barely months after the launch of the original Fat Fish Festival. A descendant of the Kingfisher series, the game uses Wishbone’s popular reel-specific modifiers, where each treasure chest above the reels can crack open to reveal enhancements like multipliers and respins at any point.

Fatter Fish Festival also keeps the action on a 5x4 grid with 20 paylines and boasts an above-average RTP of 96.25%. You only need $0.20 to start spinning the reels and can play with up to $40 per round.

Fatter Fish Festival Slot Demo

Soon, you'll be able to try out Fatter Fish Festival and other popular slot games right here on WSN.

Behind the Scenes: The Story of Fatter Fish Festival Slot

The Fatter Fish Festival slot game was born out of Wishbone’s hit Kingfisher series, which first hooked players with its egg-cracking visuals and multi-feature mechanics. Those features kept players chasing the next big trigger, so the team decided to carry that excitement into the fishing world.

Fat Fish Festival was the first step and was basically a reskin of Kingfisher with rods, worms, and boats instead of worms, dragonflies, and frogs. Even the popular kingfisher bird that cracked the eggs was replaced with a fisherman and his powerful rod. When that version did well, the studio decided on a sequel, and that’s how Fatter Fish Festival came into being. A sequel with way better graphics, a featured twist, and lots of fun.

Where to Play the Fatter Fish Festival Casino Game?

The best place to play the Fatter Fish Festival slot game is BetMGM Casino, where you can also find other Wishbone slots. While there isn’t a special promo tied to the slot, the welcome bonus gave plenty of room to explore the underwater adventure.

At BetMGM Casino, you can sign up using casino promo code WSNCASINO to get a $25 no-deposit bonus just for registering. This lets you spin the reels of Fatter Fish Festival without dipping into your own bankroll. Once I was comfortable, I made my first deposit and unlocked the 100% deposit match up to $1,000. I only had to wager the wins from my no deposit bonus once to withdraw, while the deposit match had a 15x rollover, which I found fair too.

The offer I claimed is for players in New Jersey, Michigan, or Pennsylvania, as those in West Virginia receive a much larger package featuring a 100% deposit match up to $2,500, plus a $50 casino bonus and 50 bonus spins.

To find out more about one of our top US online casinos check out our BetMGM Casino review.

Fatter Fish Festival Slot RTP, Payout, and Volatility

The Fatter Fish Festival slot RTP is set at 96.25%, above the industry market average, and the volatility sits in the medium-high range, so you can expect a mix of smaller, more frequent wins together with the occasional big wins.

When it comes to payouts, the high-value symbols are worms, lures, rods, and boats, which can fetch you between two and five times your bet for a five-piece combo. The wild is the most rewarding regular symbol, paying 10 times your bet for five on any of the game’s 20 paylines, while also substituting for others to complete wins.

The low-value card icons (10, J, Q, K, A) pay one time your bet for a five-piece combo and all have the same value. The fisherman serves as the scatter and is key to unlocking the bonus feature with his rod. However, if you can land five scatters at once, you skip the whole bonus and instantly hit the game’s jackpot of 6,000x your bet.

Fatter Fish Festival Slot Bonus Features 

The bonus features in Fatter Fish Festival are where the game really comes to life. Treasure chests above the reels crack open to reveal different enhancements, and scatter symbols are the key to unlocking free spins, modifiers, and even the golden chest super feature. Each reel has its own role, so let me break it down for you.

Fish Money Symbols

Fish symbols appear only during free spins and payout directly. Their values range from 0.2x to 1,000x your bet, and the fisherman scatter symbol acts as a collector, adding all fish values on the grid to your total win.

Scatter Bonuses

Landing a fisherman scatter symbol on the reels can randomly unlock a feature. When you land a scatter on a reel, the fisherman opens the treasure chest above that reel a little with his rod. If you continue to land scatters on that reel, the chest will finally open, and you will be awarded with that reel modifier.

Each modifier awards a free spins bonus with 10 initial spins and its own enhancement. If you unlock more than one modifier in the same spin, you’ll get 3 extra spins for each additional modifier, on top of the original 10. Here are the different reel enhancements: 

• Reel 1: Opening the red treasure chest unlocks a win multiplier. This boosts your payouts by up to 5x.

• Reel 2: Opening the green chest triggers the adder feature, which increases the cash values on the reels.

• Reel 4: The Spreader is triggered when a scatter lands on reel 4, and it grows strong with every Special Symbol. When a Collect Symbol shows up, it spreads fresh fish money symbols next to existing ones and can fill the entire grid with them.

• Reel 5: Opening the purple chest triggers a respin upgrade, which locks in collector and fish money symbols while spinning empty reels. Once a fish money symbol lands, it becomes sticky, and the empty reels spin again.

Super Feature

This is the most exciting feature in the game and is triggered when you open the gold treasure chest on reel 3. It unlocks free spins with all modifiers, Multiplier, Adder, Spreader, and Respin, active at once. You even get the chance to increase the values of the enhancements before the bonus spins start.

Fatter Fish Festival Slot User Experience

When I played Fatter Fish Festival, the first thing that caught my attention was the underwater vibe. As someone who played Fat Fish Festival a lot last year, I found the sequel a significant visual upgrade.

The reels sit against a sea-blue backdrop, with fish floating behind the grid and sea plants moving gently, while a boat drifts at the very top. It’s as if you’re looking up from beneath the surface. It reminded me a lot of Pragmatic Play's Big Bass series, which is almost the standard for modern fishing adventure games.

The soundtrack is repetitive and straightforward, almost feels like country music, but is not out of place in a fish-themed slot. At first, it blends nicely with the visuals, but after a while, I found myself tuning it out, and eventually, I had to mute it altogether because it gets boring during lengthy play. Thankfully, the game’s animations and chest-cracking effects will keep you engaged.

Fatter Fish Festival Slot Final Thoughts

Fatter Fish Festival slot blends lively visuals with multi-feature gameplay. The underwater vibe is amazing, and you get a strong gameplay balance with an RTP of 96.25% and medium‑high volatility.

The treasure chest enhancements tied to each reel, multiplier, adder, spreader, respin, and the golden chest super feature make sure the bonus rounds stay fresh and engaging. You never know which chest will open next, and things can get even more intense when modifiers combine or retrigger.

If you enjoy well-designed fishing slots and want a crack at the 6,000x max prize, Fatter Fish Festival is an exciting option and an almost perfect entry to the Kingfisher family of games, but if you want to check the original don't miss out on our Kingfisher slot review.