Manta Mayhem Slot Demo - Free Play

Slot Setup and Betting Options
- 3D Graphics
- Mobile Version
- 5 Reels
- 14.05.2026 Release Date
- 3 Rows
- £60.00 Maximum Bet
- £0.10 Minimum Bet
- 20 Paylines
- Win Both ways
Manta Mayhem Slot Review
The Manta Mayhem slot is a 5x3, 20-payline game from Play'n GO set in tropical underwater waters, with a randomly triggered free spins feature where a two-step clam pick reveals the spin count and up to five active Booster modifiers, and a maximum win of 9,000x the bet.
A giant manta ray eats pearls from clam symbols to randomly launch the bonus round. Before free spins begin, players pick their spin count from three clams then choose Boosters from a grid of eight, unlocking modifiers including sticky wilds, stacked symbols, extra spins and win multipliers of up to 10x.
The Manta Mayhem slot is high volatility with an RTP of 96.20%. It is available on desktop, iOS, Android and Windows, with a free Manta Mayhem demo on this page.
How to Play Manta Mayhem
The Manta Mayhem slot plays on a 5x3 grid with 20 paylines running from the left. Bets are selected using a scroll bar below the reels. Try the free Manta Mayhem demo on this page before playing for real.
- Reels & Rows: 5 reels, 3 rows
- Paylines: 20
- Bet Range: 0.10-60.00
- Top Symbol: Wild (Coral W) - 20x the bet for five of a kind
- Platforms: Desktop, iOS, Android, Windows
A Go Ultra side bet costing 50% more per spin improves free spin Boosters where available. Auto and Turbo modes are available in some regions.
Manta Mayhem Symbols & Payouts
Symbols follow a colourful tropical underwater theme across the 5x3 grid.
- Wild Symbol: Coral W - substitutes for all regular symbols; pays 20x the bet for a full payline of wilds
- Special Symbol: Clam - randomly triggers free spins when eaten by the manta
- Premium Symbols: Red barracuda (10x), blue cuttlefish, green shrimp and purple moray eel
- Low Symbols: Card ranks 10 through A in coral design (lowest pays 0.8x the bet for five of a kind)
Wins need three or more matching symbols across a payline from the left.
Slot Features
- Bonus Buy
- Free Spins
- Gamble feature
- Multipliers
- Quickspin
- Random wilds
- Re-spins
- Retriggering
- Stacked symbols
- Sticky wilds
- Wild symbol
Manta Mayhem Free Spins and Bonus Features
The randomly triggered free spins feature with selectable Boosters is the core mechanic of the Manta Mayhem slot.
Clams landing on the reels are eaten by the manta and can randomly trigger free spins. The feature runs across two selection screens before play begins:
- Step 1 - Pick 1 clam from 3: reveals either 6 free spins with 3 Boosters, 8 free spins with 4 Boosters, or 10 free spins with 5 Boosters
- Step 2 - Pick from a grid of 8 clams: each holds a Booster; pick the allocated number to reveal active modifiers for the round
- At least 3 Boosters are active on every free spin
The eight possible Boosters are:
- 2-4 extra free spins
- High value fish symbols stack on reels throughout
- Wild sticks in place on reel 2 for all remaining spins
- Wild sticks in place on reel 3 for all remaining spins
- Wild sticks in place on reel 4 for all remaining spins
- A random high value fish symbol becomes an extra wild
- 2 or 3 wilds appear in random positions on each free spin
- Win multiplier of 2x, 5x or 10x applies throughout the feature
Manta Mayhem RTP, Maximum Win & Volatility
The Manta Mayhem slot has an RTP of 96.20%.
- RTP: 96.20%
- Volatility: High
- Maximum Win: 9,000x the bet
- Maximum Payout: 540,000.00 at maximum stake
High volatility means wins are less frequent but tend to be larger. The 9,000x ceiling is only reachable during free spins with multiple high-value Boosters active.
Manta Mayhem Verdict
This Manta Mayhem slot review finds a high-volatility underwater slot built around a flexible free spins feature that gives players meaningful input into the modifiers they play with.
The two-step Booster selection adds genuine engagement to the free spins trigger. Up to five modifiers running simultaneously - stacked symbols, sticky wilds across multiple reels and a 10x multiplier all active at once - creates strong potential for large payouts. The randomly triggered entry point means the bonus can arrive on any spin, which suits the high-volatility format. The 9,000x maximum sits slightly below the top tier of high-volatility slots but the 96.20% RTP is competitive.
Try the Manta Mayhem demo before playing at the best Manta Mayhem slot sites.
FAQs
How many paylines does the Manta Mayhem slot have?
Manta Mayhem has 20 paylines running left to right across a 5x3 grid. Three or more matching symbols on a payline from the leftmost reel form a win.
How are the Manta Mayhem free spins triggered?
The Manta Mayhem free spins trigger randomly when clam symbols land on the reels and are eaten by the manta. There is no fixed scatter count - the feature can activate at any point during base game play.
What are the Manta Mayhem Boosters?
Manta Mayhem Boosters are modifiers selected by the player before free spins begin, chosen from a grid of eight clams. They include sticky wilds on specific reels, stacked premium symbols, 2 or 3 random wilds per spin, an extra wild symbol and win multipliers of 2x, 5x or 10x. At least three are active on every spin.
Can I play Manta Mayhem for free?
Yes. A free Manta Mayhem demo is available on this page with no registration or deposit required.
Who makes the Manta Mayhem slot?
Manta Mayhem is made by Play'n GO. Other titles in their range include Colt Lightning Inferno, Honey Rush Black & Yellow and Rise of Olympus 1000.
Licensing Authorities and Testing Agencies







