King of Atlantis Demo & Review

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Rick Donovan
Rick Donovan
Slot Tester & Gameplay Strategy Reviewer
Rick Donovan tests slots the way players actually play them—tracking bankroll swings, hit frequency, and how long sessions last under different conditions. He doesn’t rely on short demos. His reviews often show how quickly a game can drain or sustain a balance. Sometimes it’s brutal.
Slot Tester & Gameplay Strategy Reviewer, Updated July 25, 2026
Fact checked by: Ryan Rozycki
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Ryan Rozycki
Ryan Rozycki has spent more than 25 years covering the online gambling industry, with experience spanning sportsbooks, casino platforms, and the slot games that drive them. His background in evaluating offshore operators, including bonus structures, banking options, and payout reliability, gives him a grounded, player-first perspective that carries over naturally into the casino and slots space. As a contributor and reviewer for a leading online slot demo and casino review site, Ryan focuses on what players actually need before they spin for real money. That means honest assessments of RTP and volatility, clear breakdowns of bonus terms and wagering requirements, and casino reviews that cut through the operator marketing to tell you what the experience is actually like. He covers a wide range of slot titles, from classic 3-reel games to modern video slots and progressives, looking at software providers, gameplay quality, free spin features, and how well a casino's library holds up overall. When reviewing casinos, he applies the same skeptical eye he developed covering offshore sportsbooks. Bonus terms get dissected, withdrawal conditions get scrutinized, and anything that works against the player gets called out. His writing balances long-form casino analysis with content that works for everyday players who just want a straight answer before they deposit.
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King of Atlantis is a 5-reel IGT slot with 40 paylines, adjustable Gigantic Wild settings, and an 8-spin free spins bonus with locked wild positions. The mechanic is simple but effective, and the main thing to watch is which RTP version you are getting.

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King of Atlantis's Features

  • Slot Name: King of Atlantis
  • Developer: IGT
  • Theme: Atlantis / Poseidon / underwater mythology
  • Reels / Rows: 5 reels / 4 rows
  • Paylines / Ways: 40 paylines
  • RTP: Varies by version, commonly 95.00% to 96.14%
  • Volatility: Varies by version; generally low to medium depending on setup
  • Hit Frequency: Not publicly disclosed
  • Max Win: Not consistently disclosed in x-bet format across public listings
  • Bet Range: Varies by wild setting; commonly around 0.40 to 80.00 with 20 wilds, 0.65 to 1,300.00 with 40 wilds, and 0.90 to 1,800.00 with 60 wilds
  • Key Features: Gigantic Wilds, adjustable wild count, free spins, locked wild positions during bonus, wild substitution

How to Play King of Atlantis Slot – Bonus & Gameplay Explained

King of Atlantis is a 5×4 slot with 40 fixed paylines, but the real hook is the giant wild setup rather than the line layout. Wins pay left to right, and the base game is built around 2×5 Gigantic Wilds that can cover reels 2 and 3 or reels 4 and 5. Those wild blocks substitute for regular symbols and can create a lot of line coverage at once.

What makes the game unusual is that you can adjust the number of Gigantic Wilds in play before the spin. Versions commonly let you choose 20, 40, or 60 wilds. More wilds mean better chances of hitting the feature, but the stake cost rises with that choice. So there is some player influence here before the spin starts. You are basically deciding whether to keep variance moderate or pay more to lean harder into the wild-heavy setup.

The free spins trigger is tied directly to the wild mechanic. You need a scatter on reel 1 together with a Gigantic Wild formation to activate the bonus. When that happens, you get 8 free spins, and the wild positions that triggered the feature stay locked for the whole round. That is the part that gives the slot its real punch, because a locked 2×5 wild block can do serious work over 8 spins.

This is not a busy slot in the modern sense. No cascading reels, no symbol collection ladder, no side game clutter. It is a wild-led line slot where the main question is whether you want to pay more for stronger wild coverage.

How King of Atlantis Slot Plays – Volatility, Hit Frequency & Bonus Behavior

This is where the data gets messy. Some listings call King of Atlantis low variance, while others present it more like a medium-volatility feature slot because the locked wild bonus can swing a session fast. In play terms, it feels closer to medium than low if you are using the higher wild settings, because the game becomes more feature-driven and your stake is higher at the same time.

RTP also varies by version. Commonly published figures include 95.00% and 96.14%, so this is another IGT release where the exact build matters. That is worth checking because the mechanic is strong enough that you do not want to play it on a weaker version if you have a choice.

Hit frequency is not publicly disclosed in a reliable way. Session-wise, it feels less dead than a lot of old line slots because the giant wilds give you a clear feature target. Still, the game can tease. You will see spins where the setup nearly gets there but does not complete, and that is a big part of the session rhythm.

Bonus frequency is also not consistently published. The feature is not rare enough to make the game frustrating, but it is not one you should try to rush on a short bankroll either, especially if you are paying for 40 or 60 wilds. This is one of those slots where bankroll pressure can come more from your chosen setup than from the raw reel math.

King of Atlantis Bonus Features – Free Spins, Jackpots & Special Symbols

The Gigantic Wilds are the main feature. They cover two full reels and substitute for regular symbols. Their value is obvious: they massively improve line coverage and can turn an ordinary reel stop into a proper hit. What affects their impact is the number of wilds you choose before spinning and whether the block lands in a useful position relative to premium symbols.

The free spins round is triggered by a scatter on reel 1 together with a Gigantic Wild formation. You get 8 free spins, and the wild positions from the trigger stay locked for all 8 spins. That is the mechanic that drives the payout potential. A locked wild block over several spins is much stronger than a one-off expanding wild because it keeps giving the reels a head start.

Player influence exists, but only before the spin. Choosing 20, 40, or 60 wilds changes cost and changes how aggressively you are pushing the game toward its core mechanic. Once the reels move, the rest is random. In practice, that means the slot can be tuned a bit to your bankroll, which is a decent touch.

Published max-win figures vary depending on how they are stated. Some listings present the ceiling as 25 million credits, while others focus on the stronger RTP and volatility details rather than a clean x-bet number. Because of that inconsistency, the safest way to state it is that the exact max win is not consistently disclosed in x-bet format across public listings.

Final Verdict – Is King of Atlantis a Good Slot?

Yes, it is a decent IGT slot, mainly because the giant wild mechanic gives it a clear identity.

The best part is that the feature is easy to understand and actually matters. Locked 2×5 wilds in free spins can carry a session, and the adjustable wild count gives you some control over how aggressively you want to play it.

The weak spot is the usual IGT issue: version spread. RTP changes, volatility descriptions are not perfectly aligned, and the higher wild settings can make the slot feel more expensive than it first looks.

I’d call it a solid choice for players who like old-school line slots with one strong central feature. It is better than a flat classic game, but it is still not a great fit for anyone who wants frequent bonuses or a lot of feature variety.

King of Atlantis Slot Rating (Out of 10 Stars)

Rating: ★★★★★★★☆☆☆ (7/10)

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