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Koi Harmony Slot

Koi Harmony
Koi Harmony
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Updated: 22.07.2025
Reviewed by: Fabio Duarte
Immerse yourself into the Asian theme on the new Koi Harmony slot from PlayTech and Rarestone, which was released on 25/05/2022! This novelty is bound to blow your mind. The following topic caught the attention of our Slotsjudge team, and we will share all the details of this game on this page, including the RTP, volatility, maximum win, and bonus round.

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In this review
  1. Slot details
  2. Theme
  3. Bonus Rounds & Free Sipns
  4. Summary
  5. Where to play
General information about Koi Harmony slot

General information about Koi Harmony slot

Rating by Fabio Duarte:
6.7
User’s Rating: (based on  reviews):
6.0
PlayTech
Write a review +25 SJ points
  • Release Date:
    25.05.2022
  • Volatility:
    Medium
  • RTP:
    96.5%
  • Multiplier:
    No
  • Max. win:
    888x
  • Bonus game:
    No
  • Free spins:
    No
  • Scatter Symbol:
    No
  • Wild symbol:
    No
  • Symbol Stacked:
    No
  • Jackpot Game:
    No
  • Slot lines:
    1
  • Slot reels:
    3
  • Layout:
    3-1
  • Stakes range (€/£/$):
    0.10 to 500
  • Slot Theme:
    Asian, fish
  • Technology:
    HTML5
More infoLess info

Licensed and tested by

  • Gambling Comission
  • MGA

How to Play

On the Koi Harmony slot from PlayTech, you will see only 1 line, yes, in 2022 you will not often see such a mechanic. But the game has a 3x1 scheme and the Respin function. Let's learn more about how to play this slot:

  1. Check out our ranking of the best casinos to find the Koi Harmony slot from PlayTech
  2. Launch the slot and choose the bet. Its range varies from €0.10 to €500
  3. On the machine, you can also choose auto spin with adjustable settings
  4. For a faster game, you can adjust the speed of rotations

Koi Harmony RTP and Volatility

8 
The Koi Harmony slot has a fairly high RTP, which is 96.47%, and it is cool as the risk is low-med.
Taking into account that the slot has low-med volatility and a fairly high RTP, the player will be able to multiply his winnings by 888x times. So this is good news for high rollers, especially if you play at €500 per rotation.

Theme

7.8 

The Koi Harmony slot from PlayTech will take you to the world of harmonious Asia where you can easily catch some winning fish. A quiet pond and unique mechanics will allow you to relax after a hard day's work. Unfortunately, there is no musical accompaniment in this slot, but it can be replaced by the sounds of winning combinations.

On the reels of Koi Harmony, there are bright fish, which not only make a harmonious picture but also bring generous winnings. There are only 6 fish in the game, which pay from €0.1 and up to €500. Each species has its own multiplier, for example, mixed 8x, purple 20x, green 40x, red 60x, yellow 100x, and rainbow 888x. Everything is simple here, you need to catch a fish of a specific color in order to get a generous reward. Also, if you manage to catch the rainbow symbol, it will activate respins.

Theme
Koi Harmony Slot - Paytable

Mobile Compatibility

Mobile Compatibility
If you are tired of the bustle of the city and there is no way to go to your favorite lake for now, get your mobile gadget to launch the Koi Harmony slot from PlayTech. The developer has made it possible for gamblers to play this game on devices, which support iOS, Android, and Windows Phones.

About PlayTech

PlayTech is the largest provider of gambling software for land-based establishments and online halls. The team was founded in 1999 in Estonia and has been regularly developing throughout the entire time so that gamblers receive only high-quality and best content. This vendor has a rich list of hot slots, such as Buffalo Blitz, Age of the Gods, Epic Ape, Jackpot Giant, and Gladiator JP.

Bonus Rounds & Free Spins

5 

Respin

Yes, there is only one bonus symbol in the slot. It’s a rainbow fish, but what a symbol it is! If you catch that part of the fish, you will get a respin, which can be a winning one.

Koi Harmony Slot - Respin

Koi Harmony Demo Play

Not sure about the payout return of the slot? Then don’t hesitate to launch the game in demo mode and enjoy the game for free. This way, you can make sure that the game is really interesting and can reward you with high winnings. Plus, you will be able to understand the mechanics of the machine and simply have fun.

Max Win

6 
How do you like winnings of 888x times the bet? For Koi Harmony from PlayTech, which doesn't have a lot of bonuses, this is pretty cool.
Yes, on other slots from this manufacturer you could win more, but considering the scheme of the machine and its RTP of 96.47%, this is a worthy max win. The main thing is to place bets slowly and measuredly.

Overall Rating

6.7
The new Koi Harmony from PlayTech surprised many gamblers with its simple mechanics and an interesting reel inhabited by the Asian fish. Yes, it's unusual, but it looks and plays cool, especially if you're a fan of classic slots. It's simple, just place your bets and spin the reels. You may not expect a huge jackpot, but you can get a generous payout using the respin function. This machine can definitely provide you with this experience and help you catch something nice!
Hits
Colorful gameplay in the Asian style
Simple and clear mechanics
Can be played on mobile devices
Misses
No themed music
Only one respin bonus symbol

FAQ-section

How to activate the respin feature on the Koi Harmony slot from PlayTech?

The player must collect a part of the rainbow fish symbol to trigger 1 respin.

What are the minimum and maximum bet on the Koi Harmony slot?

The range of bets varies from €0.1 to €500. So this slot may attract the attention of high rollers.

Does the Koi Harmony slot have a max win limit?

Yes, the wins here are capped at 888x the bet.

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Fabio Duarte
Fabio Duarte
Expert in: News, Blog, Slot reviews, Payments
Fabio is a young writer with +6 years of experience in gambling & betting. Fabio creates professional reviews of casino and slots. Every single article Fabio made exhibits deep analytical skill and comprehensive coverage of a topic. It’s Fabio – one of the leading authors on slotsjudge.com.

2162 articles

Reviewed by Editor-in-Chief
Nikita Lukanenoks

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Overall rating

Based on 2 reviews

6/10
Sloto Toto own avatar
Sloto Toto
6 lvl Superstar
7
Winning: €4
Multiplier: x8
At first glance, the slot looks weird. Not like an even slot, lol.
But actually the game has a cool idea behind it. A winning line here is a full picture of fish. And it’s very convincing when you actually get that fish.
There are no any additional rounds or features aside from respin in the slot, just a main round with a single line. And you know what’s shocking? The game isn’t boring. At least, in my opinion.
Winning lines don’t occur that often in the game, but the min odds are x8.
Review image 1753-0
13.10.2022
Primstan own avatar
Primstan
6 lvl Superstar
5
Winning: €8
Multiplier: x40
Quite simple slot for those who doesn't like to over complicate things. Design is nice and the fish idea seems to be working pretty well, aside of the music. I did about a 100 spins and ended up having a profit, since I landed couple of 40x fishes. The only feature this game actually has - re-spin whenever you land a rainbow fish, that feature alone can be enough to get a decent hit, thus it is all you really need. Slot is alright, not to my taste, since it is too simple and lacks tension.
Review image 957-0
24.06.2022
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