Secrets of Atlantis Slot Review 2025 | NetEnt Top Slots

There’s something mysterious about the deep sea, and Secrets of Atlantis, a slot game by NetEnt, dives straight into that mystery. With glowing jellyfish, sparkling pearls, and a mythical mermaid guiding you through the ruins of the lost city, this underwater-themed slot delivers more than just pretty visuals. 

It brings exciting gameplay, unique features, and real chances to win. 

This guide will help you understand everything you need to know about Secrets of Atlantis, from how it works to what makes it special.

Dive into the Secrets of Atlantis Slot

At first glance, this game pulls you right into a world of calm, shimmering water and ancient secrets. But don’t let the peaceful ocean vibe fool you, there’s plenty of action under the surface. Let’s take a closer look at what the slot is all about and why it’s become a favorite for many players.

What’s the Theme and Story Behind the Slot?

Secrets of Atlantis is set in the mythical city of Atlantis, buried deep beneath the ocean. The background is filled with sunken buildings, floating sea creatures, and gentle light beams filtering through the water. It’s peaceful, magical, and beautifully animated.

The symbols on the reels match the underwater theme, jellyfish, turtles, crabs, gemstones, and the game’s most valuable icon: an oyster holding a giant pearl. Floating through it all is the mermaid, a mysterious figure who plays an important role in the game’s features.

It’s not just a slot, it feels like a story. That’s what draws players in.

Why Players Love Secrets of Atlantis

Players aren’t just here for the theme. This game stands out because of how it plays. Unlike many slots that only pay left to right, the real money slot pays both ways, left to right and right to left, giving you double the opportunity to line up matching symbols.

Another reason players keep coming back is the way the features work. Instead of traditional bonus rounds or free spins, the game includes Colossal Symbols and Nudge Wilds, which trigger during the base game and keep things exciting without needing extra rounds or complicated side games.

It’s simple enough for beginners but still interesting for experienced players looking for something a little different.

How to Play Secrets of Atlantis

If you’ve played any other slot before, you’ll feel right at home here. But even if you haven’t, don’t worry, this one is easy to pick up, and we’ll walk you through how it works.

Understanding the Slot Layout

This online slot uses a 5-reel, 4-row layout and has 40 paylines. What makes it a little different is the "Win Both Ways" setup, which means combinations can start from either the leftmost or rightmost reel.

Here’s how a spin works:

• You press the spin button.
  
  
• The reels spin and land on a random combination of symbols.
  
  
• If you match symbols along a payline, you win!

The layout is clean and uncluttered, so even though the underwater animations are smooth and detailed, you can still easily focus on your game.

Adjusting Your Bet and Spins

The game gives you flexibility over how much you want to bet. You can adjust two things: your coin value (ranging from 0.01 to 1.00) and your bet level (from 1 to 10). The higher these values, the more you’ll bet per spin, but also the higher your potential winnings.

So whether you’re playing just for fun or chasing big wins, you can tailor your bet to match your comfort level. There’s also an auto-play feature if you want the reels to spin automatically for a set number of times.

Some real money casinos also offer casino bonuses that can be used on Secrets of Atlantis, giving you free spins or match deposit bonuses to extend your gameplay. There’s even an auto-play feature if you want the reels to spin automatically for a set number of times.

Special Features That Make It Unique

A big reason Secrets of Atlantis stays popular is its unusual features. Instead of the typical scatter symbols or free spins, this game adds its own twist with features that trigger right in the middle of regular spins.

Colossal Symbols Re-Spins Explained

One of the game’s signature features is the Colossal Symbols Re-Spin. Here’s how it works:

During each spin, the game randomly highlights parts of the middle three reels. If all of reels 2, 3, and 4 are completely highlighted, the reels transform into one large block, this is the Colossal Symbol.

This massive 3x4 symbol drops in and can lead to massive wins, especially if it lines up with matching symbols on the outer reels. Once it lands, you get a free re-spin with the Colossal Symbol locked in place, giving you an extra shot at big payouts.

It’s thrilling, unpredictable, and can happen at any time.

How the Nudge Wilds Boost Your Wins

The mermaid isn’t just there for looks, she’s the game’s Nudge Wild. If she appears even partially on a reel, the game automatically nudges her into place so that she fills the entire reel.

When this happens, she substitutes for all other symbols and can help complete winning combinations across multiple paylines. It's a clever feature that adds surprise and potential value to every spin.

Together, the Colossal Symbols and Nudge Wilds are what make Secrets of Atlantis different, and fun.

Winning Big on Secrets of Atlantis

Now that you know how to play and what features to watch for, let’s talk about what everyone wants to know: how you win, and how much.

Secrets of Atlantis Slot Symbols and Their Payouts

If you're going to play Secrets of Atlantis, you should know what each symbol is worth. The slot has a mix of sea creatures, precious gemstones, and one extremely valuable pearl. 

Symbol	3 of a Kind	4 of a Kind	5 of a Kind
Oyster with Pearl (Top Symbol)	40 coins	200 coins	400 coins
Red Gemstone	25 coins	100 coins	300 coins
Blue Gemstone	20 coins	75 coins	250 coins
Green Gemstone	15 coins	50 coins	200 coins
Turtle	10 coins	40 coins	120 coins
Crab	10 coins	30 coins	100 coins
Jellyfish	5 coins	25 coins	80 coins
Mermaid (Nudge Wild)	Acts as a wild symbol, substitutes for all other symbols, and nudges into full view when partially visible. No direct payout.

Each symbol pays differently based on how many appear on a payline, and winnings are calculated using your chosen bet level.

Here’s a breakdown of all the symbols and their payouts at bet level 1 and coin value 1.00 (highest payout examples):

Oyster with Pearl – The Top Symbol

This is the highest-paying symbol in the casino game. It represents treasure and can lead to big wins.

• 3 on a payline = 40 coins
  
  
• 4 on a payline = 200 coins
  
  
• 5 on a payline = 400 coins

Red Gemstone

This glowing jewel is the second most valuable symbol.

• 3 symbols = 25 coins
  
  
• 4 symbols = 100 coins
  
  
• 5 symbols = 300 coins

Blue Gemstone

A sparkling underwater sapphire that delivers solid mid-range wins.

• 3 symbols = 20 coins
  
  
• 4 symbols = 75 coins
  
  
• 5 symbols = 250 coins

Green Gemstone

Not quite as valuable as the red or blue gems, but still a decent payout.

• 3 symbols = 15 coins
  
  
• 4 symbols = 50 coins
  
  
• 5 symbols = 200 coins

Turtle

This calm sea creature offers smaller but frequent payouts.

• 3 symbols = 10 coins
  
  
• 4 symbols = 40 coins
  
  
• 5 symbols = 120 coins

Crab

The red crab falls into the lower-value category but shows up often.

• 3 symbols = 10 coins
  
  
• 4 symbols = 30 coins
  
  
• 5 symbols = 100 coins

Jellyfish

The jellyfish is the lowest-paying symbol in the game.

• 3 symbols = 5 coins
  
  
• 4 symbols = 25 coins
  
  
• 5 symbols = 80 coins

Mermaid Wild

The mermaid is not tied to a payout value like regular symbols. Instead, she appears as a stacked Nudge Wild, helping you complete winning combinations by substituting for any symbol on the reels. If she lands partially on a reel, she nudges into place to fill the whole reel.

Symbols You Want to See

Each symbol in the game has a different value. The oyster with the pearl is the most valuable, followed by the red, blue, and green gemstones. The sea creatures, turtle, crab, and jellyfish, have lower payouts but appear more frequently, helping keep your balance steady with small wins.

When the Colossal Symbol feature hits, high-value symbols can fill large chunks of the screen, making it possible to hit a huge win in just one spin.

What’s the Slot’s RTP and Volatility?

Secrets of Atlantis has a Return to Player (RTP) of 97.1%, which is considered very generous. That means, on average, the game gives back $97.10 for every $100 wagered (over the long term, of course).

It’s a medium volatility slot, so you can expect a good balance between frequent small wins and occasional bigger payouts.

Playing Secrets of Atlantis on Mobile and Desktop

Not all slots play equally well on all devices, but NetEnt made sure Secrets of Atlantis works smoothly whether you’re on your phone or sitting at your computer.

Mobile Experience: Is It Smooth?

Yes, the game runs beautifully on mobile. The animations, sounds, and interface all adjust perfectly to smaller screens, and the game’s simple layout means nothing feels cramped or hard to press. You can easily play this slot while relaxing at home or passing time on a commute.

Desktop Gameplay and Graphics

On a larger screen, the game’s visuals really shine. The detailed animations, floating bubbles, and background movement create a peaceful yet immersive vibe. Plus, everything runs smoothly without lag, even during the Colossal Re-Spin or Nudge Wilds.

Whether you play on mobile or desktop, you’ll get the full experience.

Secrets of Atlantis Free Demo Play vs Real Money Play

Secrets of Atlantis is available in both demo and real money modes, and each offers a different kind of experience.

The free demo version is perfect if you're just getting started or want to understand how the game works. You’ll have access to all features, like Colossal Symbols and Nudge Wilds, but you're playing with virtual credits. It’s risk-free and great for practice, but you can’t win real money.

Real money play, on the other hand, is where the real excitement kicks in. Every spin can lead to actual cash payouts, and features like the Colossal Re-Spin can result in big wins. Plus, top online casinos often offer bonuses for real money players, adding extra value.

If you’re learning or just playing for fun, stick with the demo. But if you’re ready to chase real rewards, switch to real money play, just be sure to play responsibly at a licensed casino.

Is Secrets of Atlantis Worth Playing?

Absolutely. Secrets of Atlantis isn’t just another pretty slot, it’s smart, balanced, and packed with creative features. The Colossal Symbols and Nudge Wilds keep the gameplay exciting, the visuals are relaxing yet engaging, and the RTP is one of the best around.

Whether you’re spinning for the first time or looking for a new slot to add to your favorites, Secrets of Atlantis is worth diving into. With the right mix of fun, strategy, and opportunity, it’s a game that makes every spin feel like an adventure.

FAQs

1. What is the RTP of Secrets of Atlantis?

The Return to Player (RTP) of Secrets of Atlantis is 97.1%, which is higher than many other online slots. This means it offers solid long-term value to players.

2. Can I win real money playing Secrets of Atlantis?

As long as you're playing at a licensed online casino for real money. The game offers both small frequent wins and the chance for big payouts.

3. What are Colossal Symbols in Secrets of Atlantis?

Colossal Symbols are giant 3x4 symbols that appear when reels 2, 3, and 4 are fully highlighted. They can lead to large wins, especially with a re-spin.

4. Does Secrets of Atlantis have a free spins round?

There is no traditional free spins bonus. Instead, the game focuses on Colossal Symbol Re-Spins and Nudge Wilds, which trigger during regular gameplay.

5. Is Secrets of Atlantis available on mobile? 

The game is fully optimized for smartphones and tablets. It plays smoothly on both Android and iOS devices.

6. What does the mermaid symbol do?

The mermaid is a Nudge Wild. If she appears partially on a reel, she nudges into full view and acts as a wild, helping to complete winning combinations.

7. Can I play Secrets of Atlantis for free?

Most online casinos offer a demo version of the game where you can try it for free before betting real money.