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Slot of the Week: Secrets of Atlantis

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Simon Young

October 4th, 2021

The Lost City of Atlantis is a watery world under the Atlantic somewhere, but it’s impossible to find. Happily, you can play this Atlantis-themed slot game to give you a flavor of life beneath the ocean. And to make sure everything goes swimmingly, we’ve made Secrets of Atlantis our Slot of the Week. If you spend just $10 on this atmospheric NetEnt slot, we’ll give you 20 free spins.

So, visit TwinSpires Casino and dive down to a world never seen before, deep below the ocean waves.

How to Play Secrets of Atlantis

You might think there is not much to do in a lost world where no one goes, but you’d be wrong. This five-reel, four-row slot is packed with neat features to keep you entertained. The first thing to note is that you can win both ways on the 40 paylines: matching symbols from left to right and from right to left.

Lower paying symbols are three sea creatures, namely a jellyfish, a turtle, and a crab. There is no explanation for why the three seem to live in a bubble, but that’s a minor point. More cash comes from the more prosperous symbols – three different colored jewels and, best of all, a pearl.

No mythical seascape is complete without a mermaid, and the Secrets of Atlantis is no exception. The mermaid here is the Wild symbol, which can extend over a whole reel. But don’t fret if she does not fall over the entire reel, for a nudge feature automatically moves her up or down.

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Next on the feature list is the highlight reels. On every spin, reels 2, 3, or 4 may be highlighted. Sometimes two will light up, but it’s when all three do that you get the Colossal symbol re-spin. With this exciting feature, the entire middle block of rows 2 through 4 turns into one symbol. Clearly, if the colossal symbol matches up with anything on rows 1 or 5, you’ll be in for a decent payout. Of course, the Wild mermaid can also be a colossal symbol, too, for bumper wins.

Should you get three highlighted middle reels during the Colossal re-spin round, you get another free spin.

While there is no big bonus round to speak of, the features you get with the Secrets of Atlantis slot tend to make up for it. NetEnt claims the return to player (RTP) is 97.1%, which makes it attractive for regular wins. The volatility is medium, so you won’t see too many wild swings from one game session to another.


  • Win both ways
  • Colossal symbol re-spin feature
  • High RTP of 97.1%
  • 40 paylines

Take the Plunge with the Secrets of Atlantis Slot

To make use of our Slot of the Week promotion, you need to register your account at TwinSpires Casino and make your first deposit (remember to claim the welcome bonus). Then, opt-in to the Slot of the Week promo, spend just $10 on the game, and get a cool 20 free spins on the house. Good luck!