Sea Of Tranquility


This slot is not available to play due to UKGC’s new licence condition.

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Sea Of Tranquility Overview

The WMS software developer is the brain behind the calm and relaxing Sea of Tranquility slot. This game can be played in the best casinos online. This slot machine is loaded with a lot of features. This is a 3-rows, 5-reel, and 30-payline video slot that is offered in any genuine casino for free at first. After getting acquired with the gameplay, the user can start to play with real money. The RTP of this amazing game is 95.85%. The key features include multipliers, wild and scatter symbols and free spins.

Playing Rules

  • The first thing to do is to set the bet per line by clicking the + or the – options next on the menubar. The value range is from 0.01 to 5.00.
  • The total bets get automatically chosen when adjusting the line bet.
  • The player needs to press the button on the right bottom of the screen to set the reels revolving.
  • If you are interested in autoplay option, then press the button on the left corner at the bottom of the screen.

A Peep into Paytable

  • The lower valued symbols of the Sea of Tranquility are 10, J, Q, K, and A.
  • The higher paying symbols include a ship under the moon, an owl, fireflies jar, a nightcap, and a girl.
  • The green shooting star and a moon is the wild and replace all other images.
  • The golden moon image is the scatter and two or more triggers free spins. Two scatters reward 2x total bet + 7 free spins; three scatter reward 10 spins + 5x bet wins; four images ensure 20 spins + 10x of the winning line; five scatters grant 50 spins + 25x of the bet.

There is a limited view below and above each reel and this will get active once a scatter or wild appears. It will expand to fill the entire reel if wild appears. This is called the ‘close enough’ bonus feature and can be deemed as the counterpart of jackpots.

Online Casinos Where You Can Play Play at

Bonus amount
MYR1800 Welcome Bonus + 200 Free Spins
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New eligible UK players only. Select Casino offer on sign-up. Spins must be claimed on ‘’My Offers’’ page within 14 days of sign-up. Spins for Book of Dead game only and have a £0.10 value each; expire 7 days from claim. 35x wagering on eligible slots before winnings are converted to cash. Play Responsibly. 18+ Click for full T&C’s.
100 Free Spins
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More WMS Free slots


Bobbie Richardson
December 5, 2019

The thing that gets to me is that the free spins don’t always pay out. I have got the feature tones of times and most of the time I win around €5 to €10 on the smallest bet. Double tapping also did not work well for me and I would not recommend it. The pays are also not that big and the only way to win big is by getting five of a kind or a lot of wilds.Over all I really like the game and recommend it to all. It has a lot of potential and keeps you entertained for a long time. My rating for this game 8.5 out of 10.

Julius Gibson
July 9, 2019

Sea of Tranquility is one of the slots produced by WMS - Williams Interactive with more positive comments on forums and websites related to online gambling, not only for its simple design and relaxing sound effects, but because it could be considered a highly generous slot, and not precisely for its paytable, but for some kind of extra chance offered to the player either to form combinations as a result of the expansion of its wild symbol or to trigger the free round, explaining better, this game has 5 x 3 reels, but in addition WMS has added a cell at the top and bottom of the reels that operate virtually as two additional rows only for cases where either wild or scatters symbols appear on that places and if they are useful to the player, for example, each time a wild appears in one of these cells, the wild expands around the respective reel just as it would if it had appeared on any of the 3 regular rows, this one is the only slot that converts our almost into reality, it does the same when scatters should be eligible to trigger a round of free spins. During the free round we also have a better chance to form best combinations with the 3 main symbols of the game, which indeed, they have a size of 3 frames high, and during the free spins round these 3 symbols work as substitute each other; personally during the round of free spins I have managed to have all the reels fully covered with these symbols and fragments of them and extended wilds, which is equivalent to having the entire grid of 5 x 3 reels completely covered with the same symbol, and in this case it would be the symbol with the best prices in the game, it is clear that the payout for this kind of achievement is not astronomical, but the other reality is that situations like this are highly likely to happen in this slot, and lower prices on paytable are necessary for the game to remain economically viable for casinos.I know and play this game since some time ago and I liked it from the first moment, it is apt to earn some dollars not to make a fortune, however it has good application in the process of meeting wagering requirements. Nice game.

Eloise Powers
February 19, 2019

What can I say about the video slot Sea of Tranquility from WMS. The name suggests an ocean of peace and that’s exactly what I got first time playing this game. I lost 30 euros min betting on 30 cents per spin in no time. Many appalling dead spins, a session you wouldn’t even wish to your worst enemies.However, I felt like my job on this game wasn’t done. Fast forward, two weeks later I decided to play this game again. Sea of Tranquility offers 5-reels and 3-rows like many other slots, and also has 30 paylines. The thing that attracted me to playing this game was the “Close Enough” Area of the slot, which is the reel above and under the main reel set.We all hate it when a wild or scatter symbol drops just above or under the slot. Well, Sea of Tranquility solved that problem by enabling you to profit even if the wild or bonus symbol appears on the reel above or under the main reel set.In addition, the game also has expanding wilds. So it’s possible to get a whole screen of wilds with a bit of luck. Anyway, like I said, two weeks later I was out for my sweet revenge. I started with a budget of 60 euros and betted 60 cents per spin, and managed many great hits thanks to expanding wilds and the Lady symbol. Within 10 minutes of playing I was able to double my bankroll.I wanted to experience the free spins as well though. You need 2, 3, 4 or 5 bonus symbols appearing on adjacent reels from left to right to trigger the feature which awards respectively 7, 10, 20 and 50 free spins.I never got more than two but that doesn’t matter. My feature was excellent since the wilds kept coming in like candy and so did the money. In total I won more than 180 euros from those 7 free spins combined. Not bad right?Well there is more, shortly after I triggered the feature again and won 100x bet size (60 euros) and that’s when I decided to quit this game and replace it by another. Overall an excellent game if it’s in the mood to pay, and I also like the concept of “Close Enough”. I don’t think I ever seen that anywhere else before, apart from the “Nudge” functionality on some slots like Microgaming’s Untamed series.


I declare that my review is based on my own experience and represents my genuine opinion of this slot.