Slots Like Atlantean Treasures Mega Moolah, Jackpot & Atlantis Alternatives

Atlantean Treasures Mega Moolah is an underwater slot built by Neon Valley Studios for Microgaming, where a purple-haired mermaid expanding wild drives respins and the famous Mega Moolah jackpot wheel can pay a guaranteed seven-figure Mega prize, 5 reels, 3 rows, 10 bi-directional paylines, a low 92.08% RTP, medium volatility and a 500x base-game max win, playable free or for real money at UK casinos.

Where to Play

Play Atlantean Treasures Mega Moolah slot game at these top casinos.

Pros and Cons

Reviewed by Paul Stone
Published: September 2018 · Updated: July 2026

Pros

• It is part of the legendary Mega Moolah progressive network, so every spin carries a tiny chance at one of four jackpots, including a Mega prize guaranteed to start at £/€1 million, the same network that produced a record €17.8 million payout.
• The purple-haired mermaid is an expanding wild that fills her reel and awards a respin, giving the otherwise simple base game its main source of repeat excitement.
• The 10 paylines pay both ways, left-to-right and right-to-left, so winning combinations land more often than a standard 10-line slot, softening the low base RTP a little.
• The underwater presentation is genuinely pretty: symbols rise inside bubbles, the soundtrack is calm and tranquil, and it runs smoothly on both desktop and mobile.

Cons

• The base-game RTP is just 92.08%, well below the 96% norm, because a slice of every bet feeds the progressive jackpots, you are effectively paying for jackpot tickets.
• There are no free spins. Despite what older listings claim, the only features are the expanding-wild respin and the jackpot wheel, so the base game can feel thin.
• The base-game max win is only 500x stake, so outside of the progressive jackpot the ceiling is very low for a modern slot.
• Critics widely agree the base game is unremarkable, the entire appeal rests on the jackpot, so if you are not chasing that, there is little reason to play.

How the Game Works

Atlantean Treasures Mega Moolah is a 5-reel, 3-row slot with 10 fixed paylines that pay in both directions, combinations count from the leftmost reel and from the rightmost reel, which is unusual and gives more ways to hit a line than the modest payline count suggests. You set a stake from £0.10 to £200 and spin; symbols rise to the reels inside underwater bubbles. It is a low-RTP game at 92.08%, with medium volatility, and it was released on 25 February 2020, one of several games Microgaming and Neon Valley Studios have added to the Mega Moolah jackpot family since the original slot launched in 2006.

The reason the RTP sits so far below the usual 96% is the progressive jackpot: a portion of every bet is siphoned into the four-tier Mega Moolah prize pool. In effect you trade base-game return for a shot at a life-changing sum. Anyone drawn to slots like Atlantean Treasures Mega Moolah is really there for the jackpot wheel rather than the line pays, which top out at a low 500x stake in the base game.

Symbols and Paytable

The standard symbols are undersea creatures, starfish, seahorses and other marine life, alongside playing-card values, all presented inside bubbles. The purple-haired mermaid is the wild and the most important symbol: she substitutes for everything except the special progressive trigger icons. The highest base-game outcome is capped at 500x your stake, so the paytable itself is modest; the real prizes come from the separate Mega Moolah jackpot wheel rather than from any line combination.

Bonus Features Explained

Expanding Mermaid Wild and Respins

The purple-haired mermaid is an expanding wild. When she lands she expands to cover her entire reel, substitutes for all regular symbols, and awards a respin while she stays locked in place. This is the engine of the base game, chaining a couple of expanding-wild respins together is where most of the ordinary wins come from, since there is no free-spins round to fall back on. Players who enjoy slots like Atlantean Treasures Mega Moolah for the base game tend to be playing for these mermaid respins.

Mega Moolah Jackpot Wheel and the Four Jackpots

The headline feature is the Mega Moolah progressive jackpot, triggered at random by golden pearl overlay symbols that stick to the reels, most often across reels two, three and four. At higher stakes (up to the £200 maximum) the trigger can fire more readily. Once triggered, you are taken to the Jackpot Wheel bonus, which guarantees one of four progressive jackpots: Mini, Minor, Major and the headline Mega jackpot, which is guaranteed to pay out a minimum of £/€1 million and resets to that seed after each win. This shared network is the same one behind the record €17,879,645.12 Mega Moolah payout, and it, not the base game, is the whole reason to spin Atlantean Treasures Mega Moolah. Other family entries such as King Cashalot tap into a version of the same four-tier jackpot wheel, so the mechanic here will feel familiar if you have played elsewhere in the network.

Similar Slots Worth Trying

Atlantean Treasures Mega Moolah is an underwater slot built by Neon Valley Studios for Microgaming and released in February 2020, one of the later additions to the Mega Moolah jackpot family that began with the original slot in 2006. It plays on a 5×3 grid with 10 bi-directional paylines, a low 92.08% RTP and medium volatility, optimised for both desktop and mobile. Its features are the expanding mermaid wild with respins and the four-tier Mega Moolah progressive jackpot wheel, note that, contrary to some older listings, the game has no free-spins round.

Atlantis by Inspired Gaming shares the lost-city theme, with a much stronger 96.00% RTP across a 5×3 grid and 20 paylines. Hanzos Dojo by Yggdrasil (5×3, 25 paylines) is a different theme but a comparable simple-grid build. Fun Of The Fair by Gamesys (5×3, 20 paylines) is a medium-volatility, higher-RTP alternative for players who want a brighter mood. Wild Elements by Red Tiger (7×3, 30 paylines) is the closest on features, pairing expanding wilds with a progressive jackpot much like Atlantean Treasures Mega Moolah.

The closest slots like Atlantean Treasures Mega Moolah pair an Atlantis or jackpot theme with expanding wilds: strong matches include Atlantis, Hanzos Dojo, Fun Of The Fair and Wild Elements.

What the Critics Say

The excerpts below are genuine, independently written assessments from other slot review sites, quoted and sourced so you can see the range of outside opinion rather than just our own. Reception is broadly positive on presentation and mixed on the base game itself, which lines up with our own view that this is a slot bought for the jackpot shot, not the everyday spins.

Online-Slot.co.uk: The Atlantean Treasures Mega Moolah slot takes you on an underwater adventure to the lost city of Atlantis. With a calm and tranquil feel, symbols appear within bubbles. You’ll see an array of underwater creatures including starfish and seahorses.

JohnSlots.com: The underwater-themed Atlantean Treasures Mega Moolah slot is a beautiful addition to Microgaming’s Mega Moolah progressive jackpot family.

WhichBingo.co.uk: Atlantean Treasures Mega Moolah is a slot game developed by Microgaming that takes players to the depths of the ocean where you will visit the famous lost city of Atlantis and go on a journey for big cash prizes.

CasinoWow.com: Atlantean Treasures Mega Moolah by Microgaming is the latest concept in the progressive jackpot series and boasts some of the finest sounds and visuals of the bunch.

BigwinBoard.com: As far as slots associated with the Mega Moolah jackpot are concerned, Atlantean Treasures holds its own to an extent. It’s not as fun as the original Mega Moolah slot was but offers a new fresh alternative for those who get tired of chasing that dream hit playing the original.

More Atlantis Games

Atlantean Treasures Mega Moolah carries an Atlantis theme, taking players on a calm underwater journey to the lost city. Symbols rise inside bubbles among seahorses, starfish and other sea life, and the purple-haired mermaid acts as the expanding wild, substituting for everything except the progressive trigger icons. The graphics and animations are polished, and you can try the game in free demo mode before wagering real money. At heart it is an Atlantis-themed slot wrapped around the Mega Moolah jackpot network, so similar slots to Atlantean Treasures Mega Moolah split between Atlantis themes and progressive-jackpot games.

Great Atlantis themed slots to spin

If it is the sunken-city setting you are chasing rather than the jackpot, these lost-city titles take the theme in their own directions: Inspired’s Atlantis and Atlantis Slot, Microgaming’s own Atlantis Queen, and Red Tiger’s Atlantis Thunder. Each is one of the more atmospheric games similar to Atlantean Treasures Mega Moolah on theme alone.

More From Microgaming

Elsewhere in the Microgaming back catalogue, Crazy Chameleons, Arabian Rose, Untamed Bengal Tiger and Big Chef show the studio’s lighter, character-led side, a good starting point if you like the developer rather than the jackpot specifically.

Atlantean Treasures Mega Moolah was built by Neon Valley Studios, the Las Vegas studio behind Age Of Conquest, and published under Microgaming, the Isle of Man veteran founded in 1994 and often credited with launching the first online casino software. Microgaming holds a UK Gambling Commission licence, so the game is available at UKGC-regulated casinos. Its real legacy here is Mega Moolah: the classic Mega Moolah slot still holds the Guinness World Record for the biggest jackpot win in online slot history at €17,879,645.12, paid to UK player Jon Heywood in October 2015. Spin Atlantean Treasures Mega Moolah and you join that same progressive network, with four jackpots on offer and a Mega prize guaranteed to start at £/€1 million.

Best Casinos to Play Here

Gioo Casino

Gioo Casino runs a sizeable new-player welcome package and a matched-deposit structure, and lists Atlantean Treasures Mega Moolah in its slots library. As with any welcome offer, check the wagering requirements and free-spin terms before opting in so you know exactly what the bonus involves.

Nord Slot

Nord Slot pairs a clean, colourful design with a well-stocked library that includes Atlantean Treasures Mega Moolah, plus live-casino tables and popular roulette, baccarat and blackjack variants. The tidy layout makes it easy to find the game and line up alternatives beside it.

Wild Slots

Wild Slots carries a broad slots range including Atlantean Treasures Mega Moolah alongside hits like Bonanza, Fire Joker, Twin Spin and Starburst. Its line-up spans Microgaming, NetEnt, Neon Valley Studios and more, so it is a convenient home for both this game and similar progressive-jackpot titles.

Slot Magic

Slot Magic offers a themed, well-presented interface, a solid game count and regular bonuses, and carries Atlantean Treasures Mega Moolah. It is licensed and uses standard industry security, making it a dependable place for a jackpot-chasing session.

Unibet

Unibet is a well-established operator spanning sportsbook, casino, bingo, poker and live casino, with a tidy, well-sorted games section that includes Atlantean Treasures Mega Moolah. Its support is a strong point, with detailed FAQs plus live chat, telephone and email if you need help mid-session.

Atlantean Treasures Mega Moolah, Key Stats

Atlantean Treasures Mega Moolah slot information last reviewed: July 2026

Here are all the key statistics for Atlantean Treasures Mega Moolah slot.

Game Screenshot

Slots With the Same Features

Atlantean Treasures Mega Moolah is built around an expanding-wild respin and the Mega Moolah jackpot wheel. If you enjoy those mechanics, or want the free-spins rounds this game leaves out, these related slots are worth a look.

Slots with Free Spins

This game leaves out free spins, so if that is what you are missing, Foxin Wins Christmas Edition, Vampire Senpai, Sea Of Tranquility and The Ruby all build a proper spins round into the bonus.

Other slots with Wheel Bonus

For more of the spin-a-wheel moment the Mega Moolah jackpot delivers, Heidi And Hannahs Bierhaus and Super Star Turns both hand you a bonus wheel of prizes.

Slot games with Progressive Jackpot

For another shot at a network jackpot, Fantasy Island and Legend Of The Nile both pool a progressive prize on top of the base game, in the same spirit as NetEnt’s rival Mega Fortune jackpot on a completely separate network.

Slot games with Expanding Wilds

For more reel-spreading wilds like the mermaid here, Reactoonz and Electric Tiger both expand wilds across the grid for chained wins.

Sources & Verification

Primary sources checked in July 2026: Games Global’s official press coverage of the Mega Moolah progressive jackpot network (gamesglobal.com), the current studio behind Microgaming-branded titles including Atlantean Treasures Mega Moolah, for the four-tier jackpot structure and current payout activity; and Guinness World Records’ own record page (guinnessworldrecords.com) for the exact figure, winner and date behind the largest verified online slot jackpot payout, €17,879,645.12 to UK player Jon Heywood on Microgaming’s Mega Moolah in October 2015. Core game specifications (RTP, grid, paylines, max win, release date) were cross-checked against multiple independent industry listings for consistency.

Frequently Asked Questions

What slots are like Atlantean Treasures Mega Moolah?

If you like slots like Atlantean Treasures Mega Moolah, look at other Atlantis or progressive-jackpot titles: Wild Elements pairs expanding wilds with a progressive jackpot, Atlantis shares the lost-city theme at a far higher RTP, and other Mega Moolah games offer the same jackpot network. View all games like Atlantean Treasures Mega Moolah >>

Does it have free spins?

No. Despite what some older listings say, Atlantean Treasures Mega Moolah has no free-spins round. Its only features are the expanding mermaid wild, which awards a respin, and the Mega Moolah jackpot wheel.

How does the Mega Moolah jackpot work?

Golden pearl trigger symbols can stick to the reels, usually reels two, three and four, and fire the jackpot at random, more readily at higher stakes. You are then taken to the Jackpot Wheel, which guarantees one of four prizes: Mini, Minor, Major or the Mega jackpot, which starts at a guaranteed £/€1 million.

What is the RTP and max win?

The base-game RTP is a low 92.08%, because part of every bet funds the progressive jackpots. The base-game max win is 500x your stake, but the Mega Moolah progressive jackpot is uncapped in practice and starts at £/€1 million for the Mega tier.

Why is the RTP so low?

Because it is a Mega Moolah jackpot slot. A portion of every wager is diverted to fund the four shared progressive jackpots, which lowers the base-game return to 92.08%. You are effectively trading everyday return for a chance at a life-changing payout.

Who made this slot?

It was developed by Neon Valley Studios for Microgaming and released on 25 February 2020, one of several games added to the Mega Moolah jackpot family since the original slot launched in 2006. View the top Microgaming slots >>

Can I play it for free?

Yes. A free demo runs on this page and at many UK casinos, letting you try the expanding mermaid wild and respins with play-money credits, though the progressive jackpot can only be won when playing for real money. Please gamble responsibly and only with money you can afford to lose; players must be 18+.

Our Verdict on Atlantean Treasures Mega Moolah

Atlantean Treasures Mega Moolah is a pretty but slight underwater slot whose entire reason for being is the Mega Moolah jackpot. The expanding mermaid wild and bi-directional paylines give the base game a little life, and the artwork and bubble symbols are charming, but a 92.08% RTP and a 500x base-game ceiling make for thin everyday play, and there are no free spins despite what older listings suggest. It earns its place purely as a ticket to one of gaming’s most famous progressive networks, where the Mega jackpot starts at a guaranteed £/€1 million. If you want slots like Atlantean Treasures Mega Moolah with better base-game value, Wild Elements offers expanding wilds with a jackpot, while Atlantis delivers the same lost-city theme at a far healthier RTP. Put simply, the best slots like Atlantean Treasures Mega Moolah split into two camps: chase the jackpot elsewhere on the Mega Moolah network, or take the Atlantis theme to a game with real base-game value.

SlotsLike rating: 5/10