Secrets of Atlantis Slot Review – Free Play by NetEnt

Secrets of Atlantis Slot Facts

The Secrets of Atlantis slot is NetEnt’s 2016 underwater release offering a 1600x max win and a 97.07% RTP across a 5x4 grid with 40 paylines. An extra row of symbols and a mermaid-led ocean setting set this game apart from NetEnt’s more common 5x3 layout. Between the Colossal Symbol Re-Spin and a nudging wild, it is a game where one lucky highlight can snowball into a genuinely big result.

Secrets of Atlantis Theme & Design

Secrets of Atlantis sends the reels to the ocean floor, where a mermaid guides the way toward sunken treasure rather than any surface-world setting. The mood stays mysterious and adventurous, fitting for a game built around uncovering something hidden rather than a lighthearted romp. NetEnt gives the game an extra row of symbols compared to its more common layout, which suits the sense of scale the deep-sea theme is going for. The mermaid herself doubles as the game’s most important symbol, tying the visual theme directly to the mechanic that carries the biggest wins.

How Secrets of Atlantis Plays

With five reels and four rows locked into 40 fixed paylines, every spin already has more room for symbols to connect than a typical 5x3 slot. The Highlight Feature works quietly in the background, occasionally marking symbols on reels 2, 3 and 4, and when all three of those reels get highlighted at once, the Colossal Symbol Re-Spin kicks in. That re-spin merges the three middle reels into a single block displaying oversized Colossal Symbols, and landing a fully highlighted merged reel during that re-spin awards another re-spin on top, letting the feature chain into itself. The mermaid-themed Nudge Wild adds a second layer of tension: when it lands only partly in view, it nudges up or down until it covers its entire reel, and the same nudge applies if a Colossal Wild lands partially during a re-spin. Between the chained re-spins and the nudging wild, a single trigger can escalate quickly.

RTP, Volatility & Win Potential

The Secrets of Atlantis slot returns 97.07%, comfortably above the industry average of around 96%, making it one of the stronger long-term payers in this style of game. Medium volatility and a 23% hit frequency suggest wins land at a moderate pace rather than constantly, with the bigger results tied to the Colossal Symbol Re-Spin chaining into itself. The 1600x max win reflects that structure: it is not built around a single explosive feature but around highlighted symbols and nudging wilds compounding across a re-spin sequence.

Our Verdict on Secrets of Atlantis

The Secrets of Atlantis slot works well for players who enjoy an unusual layout, since the extra row and 40 fixed paylines change how often symbols connect compared to a standard 5x3 slot. The Colossal Symbol Re-Spin gives the game a genuine escalation mechanic rather than a flat bonus round, which is the clear strength here. The 1600x max win is comparatively modest next to other NetEnt titles, so anyone hunting bigger multipliers may want to look elsewhere. This review rates it a strong pick to try in the free demo on this page for its distinctive reel layout alone.

Secrets of Atlantis RTP, Payout & Specs

Secrets of Atlantis Bonus Features & How They Work

Highlight Feature

On any spin, symbols on reels 2, 3 and 4 can randomly get highlighted, and when all three reels are highlighted at the same time, the Colossal Symbol Re-Spin begins. During that re-spin, those three reels merge into a single reel showing Colossal Symbols, oversized blocks that only appear in this feature. If the entire merged reel gets highlighted again during the re-spin, another Colossal Symbol Re-Spin is awarded, letting the feature keep going as long as the highlights keep lining up.

Nudge Wild

The mermaid-themed Nudge Wild can land on a reel either fully or partially in view. When it only shows part of the symbol, it automatically nudges up or down until it covers the entire reel. This same nudge behavior carries over to the Colossal Wild during a Colossal Symbol Re-Spin, so a partial appearance there also gets pushed into full view rather than left incomplete.

Secrets of Atlantis FAQ