Secrets of Atlantis Slot Review by NetEnt
An underwater slot with a 97% RTP, win-both-ways paylines and Colossal re-spins
Secrets Of Atlantis Ratings
Secrets of Atlantis has been rated by our slots review team and scores an awesome 80% based from the category ratings overall.
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Secrets of Atlantis Slot Overview
Secrets of Atlantis is an underwater slot from NetEnt, set in the lost city of legend. Sunlight filters down through the deep blue sea onto ancient ruins. Turtles, crabs and jellyfish drift across the reels, alongside a shadowy mermaid.
NetEnt lists its release date as 24 August 2016. The game plays on 5 reels and 4 rows, with 40 paylines that win both ways. That means wins can pay from left to right or from right to left.
The RTP is one of its best features. NetEnt lists it at 97.07%, well above the online average. There are no traditional free spins. Instead, the action comes from Highlight re-spins, Colossal symbols and Nudge Wilds.
Secrets of Atlantis at a Glance
| Developer | NetEnt |
| Release date | 24 August 2016 (NetEnt) |
| Layout | 5 reels, 4 rows, 40 paylines |
| Win both ways | Yes |
| RTP | 97.07% |
| Hit frequency | 23.00% |
| Max win | 1,600x your bet (NetEnt) |
| Bet range | €0.20 to €200 per spin |
| Main features | Highlight feature, Colossal Symbol Re-Spins, Nudge Wilds |
The Legend of Atlantis
The story of Atlantis goes back to the Ancient Greek philosopher Plato. He described a powerful island city that sank beneath the sea. Ever since, people have wondered whether it was real.
Secrets of Atlantis takes that myth and brings it to life. The reels show the ruined city slowly dissolving in the ocean. Our original review praised its calm, magical feel.
Theme and Design
The design is bright and colourful, with a soft blue background. Our original review described rays of sunlight shining down onto the ruins.
The symbols are a mix of sea creatures and gems. You’ll see turtles, crabs and jellyfish, along with sapphire, emerald and ruby gems. The pearl clam is the top-paying symbol, and the mermaid is the wild.
Betting, RTP and Max Win
NetEnt lists bets from €0.20 up to €200 per spin. All 40 paylines are fixed.
The RTP is 97.07%. That’s about a full percentage point above the online average of around 96%. NetEnt rounds it to 97.1% in its game description.
NetEnt lists a hit frequency of 23.00%, so about one spin in four produces a win. The maximum payout is 1,600x your bet.
Win Both Ways
Most slots only pay from left to right. Secrets of Atlantis pays in both directions.
A win can start on the leftmost reel and run right, or start on the rightmost reel and run left. That gives you more chances to land a win on every spin.
The Paytable
Our original review listed these line bet payouts for 3, 4 and 5 matching symbols:
| Symbol | 3 on a line | 4 on a line | 5 on a line |
|---|---|---|---|
| Pearl clam | 20x | 50x | 400x |
| Ruby gem | 7x | 16x | 70x |
| Emerald gem | 6x | 14x | 60x |
| Sapphire gem | 5x | 12x | 50x |
| Jellyfish, turtle and crab | 3x | 6x | 15x |
These are multiples of your line bet, not your total bet. Check the paytable at your casino for the current figures.
The Highlight Feature
The Highlight feature can randomly highlight symbols on reels 2, 3 and 4 on any spin. It’s the key to the game’s biggest wins.
If all three middle reels are highlighted, you win a Colossal Symbol Re-Spin. Reels 2, 3 and 4 then merge into one giant reel.
Colossal Symbol Re-Spins
During the re-spin, the merged middle reel shows Colossal symbols. NetEnt says each Colossal symbol is a 3×4 block. That’s big enough to fill the whole merged reel with one symbol.
If the whole merged reel is highlighted during the re-spin, you get an extra Colossal Symbol Re-Spin. That gives you another chance at a big win.
Colossal symbols can only appear during these re-spins. They don’t show up on normal spins.
Nudge Wilds
The mermaid is the Nudge Wild. She can land fully or partly on a reel.
If she lands partly, she nudges up or down to cover the whole reel. That gives you a full wild reel, which can complete several lines at once.
The same thing happens during a Colossal Symbol Re-Spin. If a Colossal stacked wild lands partly, it nudges into full view. That covers the whole merged middle reel with wilds.
Does Secrets of Atlantis Have Free Spins?
No. Secrets of Atlantis doesn’t have a traditional free spins round. Our original review noted this too.
Instead, the Highlight feature and the Colossal Symbol Re-Spins do the heavy lifting. If you love free spins, this may feel a little different at first.
How to Play Secrets of Atlantis
- Set your stake: bets run from €0.20 to €200 per spin.
- Spin the reels: wins pay both ways on 40 lines.
- Watch reels 2, 3 and 4: highlights there can start a re-spin.
- Enjoy the Colossal re-spin: the middle reels merge into one.
- Look for the mermaid: she nudges to cover a whole reel.
Who Is Secrets of Atlantis Best For?
Secrets of Atlantis suits players who like a high RTP and calm, steady play. The win-both-ways system keeps the reels busy.
It’s a good fit if you:
- Want a high RTP: 97.07% is well above average.
- Enjoy underwater themes: sea creatures, gems and a mermaid.
- Like re-spin features: no waiting for scatters to line up.
If you want a classic free spins round, it may not be for you.
Tips for Playing Secrets of Atlantis
- Watch the middle reels: all three need highlighting for a re-spin.
- Hope for a Colossal clam: it’s the top-paying symbol.
- Don’t forget both ways: check both ends of the reels for wins.
- Try the demo: the Highlight feature is easier to follow once you’ve seen it.
- Set a budget: decide your limit before you start.
Is Secrets of Atlantis Mobile Friendly?
Yes. Our original review said the game is playable on all devices. It works in your phone’s browser at casinos that carry NetEnt games.
About NetEnt
NetEnt is one of the best-known slot studios in the world. Our guide to the top slot providers in the UK covers NetEnt and other leading studios. You’ll find more of its games on our NetEnt slots page.
What We Changed in This Review
- Verified figures: we’ve added NetEnt’s RTP, hit frequency, max win, bet range and release date.
- Layout: we’ve confirmed the 5×4 grid and win-both-ways paylines with NetEnt.
- Bet range: our original review gave line bets of 0.01 to 1.00. NetEnt lists €0.20 to €200 per spin.
- Title: our original page title mentioned a 400x multiplier. The 400x figure is the clam’s line bet payout, not a multiplier feature.
Re-Spins vs Free Spins
Free spins rounds usually need three or more scatters. You might wait a long time to trigger one. Secrets of Atlantis works differently.
Its Highlight feature can appear on any spin. When all three middle reels light up, you get a Colossal re-spin straight away. That makes the big moments feel more frequent and less like a long wait.
Pros and Cons
Pros
- High RTP of 97.07%
- Wins pay both ways on 40 lines
- Colossal Symbol Re-Spins with a giant middle reel
- Nudge Wilds that cover a full reel
- Still listed by NetEnt
Cons
- No traditional free spins
- Max win of 1,600x is moderate
- Calm pace may not suit thrill seekers
- Older game from 2016
Our Verdict
Secrets of Atlantis is a relaxing NetEnt slot with a generous 97.07% RTP. Wins pay both ways, and the Colossal re-spins can fill the middle of the screen. There are no free spins, but the features keep things lively. If you want a high RTP and a calm underwater theme, it’s well worth a dive.
Similar Slots to Try
For another take on the lost city, read our Atlantis slot review from Apollo Games. Our original review also compared this game with two other older favourites. Try Novomatic’s Always Hot Cubes or Microgaming’s Bar Bar Black Sheep.
Secrets of Atlantis FAQs
Who made Secrets of Atlantis?
NetEnt made it. NetEnt lists its release date as 24 August 2016.
What is the RTP?
NetEnt lists the RTP at 97.07%.
Does it have free spins?
No. It uses Colossal Symbol Re-Spins and Nudge Wilds instead.
How many paylines are there?
There are 40 paylines on 5 reels and 4 rows. Wins pay both ways.
What triggers the Colossal re-spin?
All three symbols on reels 2, 3 and 4 need to be highlighted.
What is the maximum win?
NetEnt lists the max payout as 1,600x your bet.
Can I play Secrets of Atlantis on my phone?
Yes. It runs in your mobile browser at casinos that carry NetEnt games.
Underwater slots are relaxing, but always set a budget before you play. For tips on staying in control, visit our responsible gambling page. To learn how RTP works, see our guide to RTP and online slots.
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