Secrets of Atlantis

Secrets of Atlantis is a 5x4 underwater-themed video slot with 40 fixed paylines and Win Both Ways. With a 97.1% RTP, Colossal Re-Spins, and Nudge Wild mechanics, it delivers strong feature-driven gameplay and high line-win potential up to 4,000x.

4.2

About Secrets of Atlantis

Secrets of Atlantis is a 5-reel, 4-row video slot by NetEnt released in 2017, featuring 40 fixed paylines and a Win Both Ways mechanic that pays from left to right and right to left. The game has a 97.1% RTP and a 22.9% hit frequency, blending steady base gameplay with feature potential. Set in an atmospheric underwater world with sea creatures and glowing artifacts, the mermaid acts as a Nudge Wild that can expand to cover an entire reel. The Highlight feature marks positions on reels 2, 3 and 4, and when fully covered, triggers a Colossal Symbols Re-Spin that merges them into a 3×4 symbol block with possible retriggers, while the maximum payout reaches 4,000x on a single bet line and up to 320,000x for coinciding wins.

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Main Features of Secrets of Atlantis

40 Fixed Bet Lines
Win Both Ways
Highlight Feature
Colossal Symbols Re-Spins
Nudge Wild

Bonus Mechanics in Secrets of Atlantis

Highlight Feature: Randomly highlights positions on reels 2, 3 and 4. When fully covered, activates Colossal Symbols Re-Spin.
Colossal Symbols Re-Spin: Reels 2–4 merge into one reel displaying 3×4 symbol blocks. Can retrigger if fully highlighted again.
Nudge Wild: Expands to cover the entire reel when partially visible.

Secrets of Atlantis Demo

Playing Secrets of Atlantis in demo mode is ideal for understanding how the Highlight feature activates Colossal Re-Spins. The volatility becomes clearer once you experience the 3x4 Colossal symbols and Nudge Wild behavior without risking real money.

Secrets of Atlantis Payout Table

Symbols are divided into higher-paying underwater treasures and lower-paying sea creatures inside bubbles. Wins pay both left to right and right to left, with only the highest win per active line counted. The top symbol is the Pearl shell, followed by the Red gemstone, Green gemstone, and Blue gem, while the Crab, Turtle, and Jellyfish form the lower-paying group.

Pearl Shell

5: 400x

4: 50x

3: 20x

Red Gemstone

5: 70x

4: 16x

3: 7x

Green Gemstone

5: 60x

4: 14x

3: 6x

Blue Gemstone

5: 50x

4: 12x

3: 5x

Crab

5: 15x

4: 6x

3: 3x

Turtle

5: 15x

4: 6x

3: 3x

Jellyfish

5: 15x

4: 6x

3: 3x

Highlight Feature

The Highlight Feature randomly illuminates positions on reels 2, 3 and 4 during every spin, creating visible tension as the marked spots build across the grid. If all positions on those three reels become fully highlighted by the end of the spin, a Colossal Symbols Re-Spin is activated. This mechanic acts as the main trigger system in the base game and visually signals when the feature round is about to begin.

Colossal Symbols Re-Spin

During a Colossal Symbols Re-Spin, reels 2, 3 and 4 merge into a single expanded reel that displays Colossal symbols. A Colossal symbol appears as a 3x4 block and can only occur within this feature. If the merged reel becomes fully highlighted again after landing, an additional Colossal Re-Spin is awarded. The feature ends once the reel is no longer fully highlighted, and any accumulated winnings are added to the original spin.

Nudge Wild

The Nudge Wild is represented by the mermaid and may land either partially or fully on a reel. If only part of the symbol is visible on active rows, it automatically nudges up or down to cover the entire reel. During a Colossal Symbols Re-Spin, a Colossal Nudge Wild follows the same behavior, expanding to fill the merged reel when partially displayed, increasing the potential for full-reel combinations.

How to Play Secrets of Atlantis

The game operates on 40 fixed paylines. Players choose coin value and bet level before spinning. Default minimum bet is €0.2 and maximum bet is €200. Wins pay from both left to right and right to left, but only the highest win per line is paid. The Highlight feature activates randomly during spins. When reels 2–4 are fully highlighted, Colossal Symbols Re-Spins begin. Reels merge and display 3x4 symbol blocks. Additional re-spins are possible if fully highlighted again. Autoplay and Max Bet functions are available. Coin value and bet level sliders allow flexible adjustments. The game is optimized for 1280x720 resolution and HTML5 deployment, ensuring smooth mobile and desktop play.

Colossal Re-Spins Caught Me Completely Off Guard

I grabbed 100 FS, no deposit, and figured I’d just test the waters… but wow. The underwater theme feels calm at first — soft soundtrack, glowing gems, mermaid visuals — and then suddenly the Highlight feature starts lighting up reels 2, 3 and 4 and things get intense. When the Colossal Re-Spin triggered, my heart literally stopped. Watching reels merge into that massive 3x4 symbol block is such a cool mechanic. I almost hit the 4000x top symbol on a line — it landed 4 of a kind and paid 50x, but that near miss had me sweating. The Nudge Wild mermaid expanding across the reel feels powerful. It’s not constant, but when it hits, you know something big could happen. The game feels moderately volatile — not dead spins all the time, but the real excitement is clearly in the Re-Spins. Would I play again? Absolutely. Especially with a bonus. The feature potential and 4000x line win ceiling make it worth chasing.

Ava

Florist

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Secrets of Atlantis