Author
Last Updated on 13 Aug 2026
10 min read
| Game Developer | Kalamba Games |
|---|---|
| Release Date | September 2018 |
| RTP | 97.73 |
| Volatility | - |
| Bonus Feature |
| Bonus Rounds | |
|---|---|
| Free Spins | |
| Quickspin Feature | |
| Gamble Feature | |
| Mulitplier |
| Autoplay | |
|---|---|
| Progressive Jackpot | |
| Configurable Winlines | |
| Min. Bet | - |
| Max. Bet | - |
Atlantis Thunder’s Hyper Bonus instantly lets you buy into the free spins round, skipping the usual wait for scatters. This, paired with the 3600 ways-to-win grid, creates a slot where spins can quickly lead to feature triggers. The game runs at a 96.66 percent RTP with generally high volatility, so there’s a big payout ceiling, but not every session will reach it.
The mix of multiplier wilds, a progressive jackpot, and a 19000x max win multiplier makes it stand out if you like higher volatility. I found the 6-reel, 3-4-5-5-4-3 layout unusual and interesting, especially when the bonus triggers and the music kicks in. If you like feature-packed slots, you’ll want to check this out.
You can try the demo free here or browse more games on our slots page. Atlantis Thunder isn’t currently available in any regulated US real-money casino, but you’ll spot it on many international sites.

Atlantis Thunder runs on 6 reels with a 3-4-5-5-4-3 row layout, creating 3600 fixed ways to win. Wins pay left to right on adjacent reels, and you can’t adjust the number of ways.
You can set your spin amount from 0.60 up to 600.00 per spin, depending on the operator. The game uses a ways-to-win system, so you only set your total spin, not paylines.
The main bonus feature is the Free Spins Bonus:
Atlantis Thunder also features:
Autoplay and turbo spin options are available in the in-game menu. The setup is quick.

Atlantis Thunder has a 96.66 percent RTP. Over the long run, the game returns $96.66 for every $100 played. This figure matches most modern online slots.
The slot is generally rated as high volatility. Wins may be less frequent, but they can be larger when they hit, especially during bonus features or with multiplier wilds. With a high max win and progressive jackpots, you’ll want to be ready for some big swings.
No hit frequency data is published. High volatility slots usually mean long stretches with no major wins, broken up by bigger prizes. That’s the tradeoff.

All payouts are based on multiples of your total spin. Here’s the available paytable data (unverified), using placeholder symbol numbers due to the lack of public symbol names:
| Symbol | 3-of-a-kind | 4-of-a-kind | 5-of-a-kind |
|---|---|---|---|
| Symbol 1 | 1x | 2x | 3.33x |
| Symbol 2 | 0.83x | 1.66x | 3.33x |
| Symbol 3 | 0.83x | 1.66x | 3.33x |
| Symbol 4 | 0.5x | 1.25x | 2.5x |
| Symbol 5 | 0.5x | 1.25x | 2.5x |
| Symbol 6 | 0.25x | 0.66x | 1.25x |
| Symbol 7 | 0.25x | 0.66x | 1.25x |
| Symbol 8 | 0.16x | 0.33x | 1x |
| Symbol 9 | 0.16x | 0.33x | 1x |
| Symbol 10 | 0.16x | 0.33x | 1x |
| Symbol 11 | 0.16x | 0.33x | 1x |
Multiplier wilds can substitute for regular symbols and boost any win they complete. Scatter symbols trigger the Free Spins Bonus when 3 or more appear. Progressive jackpot symbols can appear and may lead to a jackpot win if triggered.
Atlantis Thunder includes progressive jackpots that can be triggered during play. The structure and trigger method for these jackpots aren’t detailed, but they’re mentioned as a highlight of the game.
Jackpot wins are awarded separately from the regular paytable and can be hit through special symbols. That means there’s another layer of big rewards on top of the 19000x max win available in standard play. Jackpots can change a session fast.

Every spin in Atlantis Thunder runs on a random number generator, so no strategy can change your odds. When I played the demo, bonus features didn’t show up often, but they really boosted the session when they did.
I started with smaller spins to see how often free spins and jackpot symbols would land. In one session, I saw a cluster of wild multipliers hit back-to-back, which spiked my total balance more than any single regular win. Sometimes the slot goes cold for a while, then heats up quickly.
Autoplay and turbo spin are there if you want to speed things up or automate a session. Remember, past spins don’t affect future results. Keep it fun and stick to your limits. That’s the real trick.
Atlantis Thunder uses a detailed 2D fantasy art style. The reels sit against an underwater city, with statues and pillars hinting at the Atlantis myth.
Winning combos trigger animated overlays, with shimmering effects and reel motion. The soundtrack is orchestral, with aquatic and mythological undertones, and the music ramps up during free spins. It’s easy to get caught up in the mood.
The interface is clean, with clear buttons and quick controls on both desktop and mobile. The whole look ties the theme together and keeps things feeling lively.

The Atlantis Thunder demo is available here for free play, with no download or registration needed.
If you’re in the US and want real-money slots, sweepstakes casinos are legal in most states. Our sweepstakes casinos page explains the basics.
Online casinos in regulated states like New Jersey, Pennsylvania, and Michigan may offer similar slots from top providers. Licensed options are listed on our online casinos page. Check what’s available in your area.
Slots are entertainment, not a way to make money. Setting a spend limit before you start is the easiest way to keep things fun. Session timers and self-exclusion options are there if you ever need them. If playing stops feeling fun, that’s a sign to step back. Support is available any time you want it.
Atlantis Thunder is best if you like high-volatility slots with bonus buys, progressive jackpots, and a heavy mythological theme. If you want a bigger payout ceiling and don’t mind streaky runs, this one fits.
The strongest part is how it combines a 3600 ways-to-win setup with multiplier wilds and the option to buy the bonus. The Hyper Bonus gives instant access to free spins, which is great if you don’t want to wait for scatters. That shortcut changes the pace.
Its main downside is the lack of detail around some paytable info and jackpot mechanics. Some players won’t love the long dry spells that come with high volatility, either. But that’s part of the ride.
Try the demo to see if the gameplay and features hit your style. The multipliers, jackpots, and high RTP make it one I’d come back to when I’m after a feature-heavy, high-stakes session. Sometimes, that’s exactly what you want.
Atlantis Thunder has a 96.66 percent RTP. This means that, on average, the game returns $96.66 for every $100 played over a long session.
The slot is generally rated as high volatility. This means bigger wins are possible but may be less frequent, leading to streakier gameplay sessions.
Atlantis Thunder offers a Free Spins Bonus round triggered by scatters and a Hyper Bonus feature that lets you buy instant entry into the bonus. Multiplier wilds and progressive jackpots also add extra ways to win.
The game uses a 3600 ways-to-win system, so there are no traditional paylines. Wins are awarded for matching symbols on adjacent reels from left to right.
Yes, Atlantis Thunder includes progressive jackpots that can be triggered through special symbols during play. The exact structure and trigger method are not detailed, but jackpots are a core feature of this slot.
Yes, you can play the Atlantis Thunder demo slot for free on Gamesville. No download or registration is required to try the game in demo mode.
Atlantis Thunder - General Discussion
Post your own Review