


Atlantis Megaways is a medium-volatility online slot from Reelplay with an RTP of 96.09% and a maximum win of 8,641x.
Page updated July 2026
Atlantis Megaways sees Australian developer ReelPlay apply the Megaways engine to the sunken-city legend for what appears to be the format's first proper crack at the theme. It follows on from ReelPlay's earlier El Dorado Infinity Reels and last year's Hypernova, both of which put similar expanding-reel systems to work, and this release carries a familiar engine into a fresh setting with a strong visual upgrade.
The game plays out entirely underwater, with a genuinely striking backdrop full of mystery and atmosphere — ReelPlay has a reputation for strong art direction, and Atlantis Megaways lives up to it. Six main reels hold up to seven symbols apiece, topped by a 1x4 bonus reel, and when everything expands to its maximum the game generates up to 117,649 ways to win, giving every spin a genuinely different shape to look at.
Ten regular pay symbols split the paytable into low and high tiers. The low end sticks to classic 10 through Ace royals dressed up with a seaweed motif to fit the theme, while the four high-value symbols move away from the usual aquatic clichés — lionfish, seahorse, octopus and dolphin all feature instead of the more predictable mermaid-and-shark combination. The standout symbol is a Neptune-styled character that needs just two of a kind to pay, topping out at 100x the stake for six across a maximised grid, with a submerged-temple Wild adding extra substitution power on top.
Atlantis Megaways returns a theoretical 96.09% to players, a healthy figure that sits above the market midpoint. Volatility is set to medium, which pairs sensibly with the sheer combination count on offer — enough variance to make the bigger multipliers feel earned, without pushing the game into brutally long dry spells between wins.
The ceiling here is 8,641x the stake, a genuinely strong top-end figure for a medium-volatility Megaways slot. Bets run from 0.20 up to 100 per spin, and with up to 999 auto-spins available, there's plenty of scope to settle in for an extended underwater session.
Where El Dorado Infinity Reels made its name through expanding reels and stacked jackpots, and Hypernova had a rougher time landing its version of Megaways, Atlantis Megaways feels like the studio settling into the format properly. The visual upgrade is the most obvious improvement, but the symbol design — favouring genuine sea creatures over generic aquatic filler — shows a developer paying closer attention to theme cohesion than a straightforward reskin exercise would.
Atlantis Megaways takes a proven engine, wraps it in one of ReelPlay's best-looking builds yet, and backs it with a genuinely rewarding RTP and max win. Between the symbol variety and the sheer number of ways on offer, it's well worth exploring in the free demo at johnessyslots before deciding whether to spin it for real.
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Atlantis Megaways has an RTP (return to player) of 96.09%. RTP is the theoretical percentage of total stakes a slot returns to players over a very large number of spins, as published by Reelplay — individual sessions can land far above or below it.
Atlantis Megaways is rated medium volatility. Medium-volatility slots sit between the extremes — a balance of win frequency and win size.
The advertised maximum win for Atlantis Megaways is 8,641x. Max wins are extremely rare by design — treat them as a ceiling, not an expectation.
Atlantis Megaways is developed by Reelplay.
Verified Data via Johnessy AI