This is our own slot rating based on how popular the slot is, RTP (Return To Player) and Big Win potential.
Play the Epic Fish Marlin Madness free demo slot—no download required! Try Quickspin’s latest game, enjoy risk-free gameplay, explore features, and learn game strategies while playing responsibly. Read our expert Epic Fish Marlin Madness slot review with ratings for key insights before you play.
Released:September 23 2025
Responsible Gaming
You have to be 18 years or older to play our demo games. Please confirm that you are of the legal age to proceed:
Curacao-License
Costa Rica-License
Curacao-License
Curacao-License
Curacao-License
Curacao-License
Curacao-License
Curacao-License
Curacao-License
Malta-License (EU)
Curacao-License
Epic Fish: Marlin Madness by Quickspin is a vibrant underwater-themed online slot that invites players to cast their lines in search of the elusive Black Marlin. Set on a 5x3 grid with 10 paylines, this medium-volatility game combines classic payline mechanics with innovative collection features. Players can trigger cascading wins, collect fish symbols for instant prizes, and progress through three escalating Free Spin modes. With a max win of 7,673x and a default RTP of 96.12%, the slot offers a balanced mix of entertainment and payout potential. The game’s playful design, animated sea creatures, and dynamic features make it a standout choice for fans of fishing-themed slots and immersive gameplay.
Epic Fish: Marlin Madness is played on a 5-reel, 3-row grid with 10 paylines. Wins are formed by landing 3 or more matching symbols from left to right, starting on the first reel. The game’s medium volatility ensures a steady flow of wins with occasional big payouts. Players can activate the Extra Bet to add a fourth row, increasing the chance of landing fish symbols and triggering the Fish Collection feature. The base game includes Wilds, Fish symbols, and random Shark Attacks that transform low-paying symbols into valuable fish.
The Fish Collection feature is triggered when a Wild Fisherman lands alongside visible Fish symbols. Each Wild collects all fish values on screen, instantly adding them to the total win. Fish symbols come in three sizes with multipliers ranging from 1x to 25x. This feature adds excitement to both base and bonus gameplay. Fish symbols and Wild Fisherman are key to maximizing payouts.
Randomly triggered in the base game, Shark Attack sees a predator devour low-paying symbols and replace them with Fish. If a Wild is present, it immediately collects the new Fish values. This feature adds unpredictability and boosts win potential during regular spins. Shark Attack and symbol transformation make this a thrilling surprise.
Epic Fish: Marlin Madness offers three escalating Free Spin modes:
Each mode builds on the previous, offering deeper gameplay and higher win potential.
Activating the Extra Bet doubles the stake and adds a fourth row to the grid. This increases the chance of landing Fish symbols and triggering the Fish Collection feature by up to 203%. It’s ideal for players seeking more frequent feature activation. Extra Bet and enhanced grid provide strategic depth.
Players can use the Bonus Buy feature to access Free Spins instantly. Options include entry into any of the three Free Spin modes, with prices scaling based on feature level. This caters to high rollers and those who prefer direct access to bonus rounds. Bonus Buy and feature access make gameplay more flexible.
Epic Fish: Marlin Madness offers a default RTP of 96.12%, though lower versions (94.19%, 92.07%, 84.21%) may be available depending on the operator. The slot features medium volatility, delivering a hit frequency of 24.58%. The maximum win is capped at 7,673x the bet, achievable through the Black Marlin multiplier and upgraded Free Spins. While the max win probability is low, the game’s layered features offer consistent engagement and payout opportunities.
Built with HTML5 technology, Epic Fish: Marlin Madness performs flawlessly on mobile devices. The game is fully responsive, adapting to various screen sizes while maintaining crisp visuals and smooth animations. Touch controls are intuitive, and the underwater theme remains immersive whether played on smartphones, tablets, or desktops.
Epic Fish: Marlin Madness is ideal for players who enjoy feature-rich slots with layered mechanics and playful themes. Fans of fishing games and collection features will appreciate the dynamic gameplay. High rollers can benefit from the Bonus Buy and Extra Bet options, while casual players will enjoy the medium volatility and engaging visuals.
To maximize your experience with Epic Fish: Marlin Madness, focus on triggering the Fish Collection and progressing through Free Spin modes. Use the Extra Bet if your budget allows, and consider Bonus Buy for direct access to high-tier features. Feature progression and fish collection strategy are essential for success.
Epic Fish: Marlin Madness by Quickspin is a charming and feature-packed slot that blends classic mechanics with innovative upgrades. Its Fish Collection, Shark Attack, and escalating Free Spins modes offer layered gameplay and solid win potential. While the Free Spins can't be retriggered and the max win is rare, the slot’s engaging visuals and strategic depth make it a top pick for fans of fishing-themed slots and progressive features. If you're ready to chase the legendary Black Marlin, this slot delivers a rewarding ocean adventure.
This is our own slot rating based on how popular the slot is, RTP (Return To Player) and Big Win potential.
Yes! You can enjoy Epic Fish Marlin Madness in demo mode without signing up. Try our free version above to explore the features. For real money play, visit one of our recommended Quickspin casinos.
To play for real money:
The slot offers a big max win of 7673x your stake.
Example: A €1 bet could return up to a solid €7673.
Yes! Most of our featured Quickspin casinos on this page offer welcome packages that include free spins or bonus cash usable on Epic Fish Marlin Madness. Always check the terms before claiming.
Absolutely. The game is fully optimized for mobile devices, including iOS and Android.
Yes, the demo mirrors the full version in gameplay, features, and visuals—just without real money payouts.