Last Updated: Thursday, 14 March 2024 23:16

Koi Princess slot

It is not a secret that the Japanese culture conquers the hearts of people all over the world and our developers were no exception. Swedish developer of slot machines NetEnt presented to you another novelty – Koi Princess slot. We suggest you get acquainted with our feedback on this machine below. You can play for free in the demo of this slot machine on the top of this page. Koi Princess has many bonus features and triggers them often.

koi princess slot logo

This machine uses the "bonus bet" feature, which increases the probability of triggering the features and double your total bet per spin.

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Personal testers opinion

Here it will be complicated to hit a huge win. Even the complete screen of wild symbols gives only x200 bet. A lot of bonus features makes the gameplay sharp and exciting. The main indirect sign that the slot is "cold" if when the fish feature seems to be triggered and then pushes back. If you see such action with an enabled bonus bet - close the slot immediately. The maximum potential of winning can be released in Sure win free spins (if the player will hit mega winning in the first spin). Statistically, every 55th spin (1,80%) triggers the bonus feature.

If you're missing a lot from those numbers, you should think about shutting down this machine. Usually, if it is cold - it stays cold with the increasing number of spins. It reserves 46% of the winning pool for the bonus features and 54% for winning in the usual spins. The probability of the hit (any winning) next spin is equal to 26.80%. My biggest winning during the testing has reached 500x. Koi princess slot does not always keep the balance, but still, you can try to complete the bonus requirements. Always put bonus bet (on) to get higher RTP (return to player percentage) numbers (96%).

Review and recommendations from the testing team

Koi Princess is probably one of the most favourite slots among fans of this provider! It is bright, unusual, has some additional features in the usual spins and a whole set of bonus features.

  • It also has extremely low winning combinations and relatively low payouts. In the main game, the slot does not keep the balance, and there is no reason to talk about its increase. You can only win with an additional feature or with a bonus feature, which the slot triggers quite often. This is probably why the slot got such a large number of fans.
  • So, the slot additional feature in the usual spins is the random appearance of three fish with a range of other additional features to choose from, among which: a bonus feature, a 5-hit, a random wild and a wild reels. The slot usually gives these features with different frequencies, either by literally triggering one every few spins or none in 100 spins.
  • With the 5-hit and random wild features, you should not expect a big win; their values do not usually exceed 10x - 25x total bets, but the feature wild reels are quite able to bring a big winning from more than 100x bets.
  • The bonus also offers several game options: bonus wheel, coin win, wild reels free spins, sure win free spins.
  • A coin win is one of the worst choices. The winning on this feature is minimal and ranges from 10x to 30x bets.
  • Sure win free spins is quite a strange bonus. If you're lucky to get a good combination at the first spins, then this amount will be added to all spins. Otherwise, the winning will be less than the one with Coin win, but the potential is high.
  • Wild reels free spins - We are randomly given from 1 to 5 wild reels, which can bring quite a large winning from 100x bets.
  • The bonus wheel is theoretically one of the best bonus features since on the wheel you can win about 20x - 100x total bets and additionally get free spins or additional bets. In practice, the average win on this bonus feature is 40x - 80x total bets.

In conclusion, it can be said that the slot potential is not very big; winnings from 1000x bets are not possible even in theory. The slot has a quite high triggering frequency, which can be felt during the first 20-30 spins. And it is not recommended to continue the session if there are no bonuses or random features in this period. The slot is not the best choice for wagering, but if you feel it is in a good "mood", then you can try it.

Hidden parameters and settings of the slot (data from testing)

  • The frequency of triggering of the bonus feature is statistically every 55th spin (1,80%). It is 3 times more often than in the middle line of Netent slots. This number was gathered with the activated bonus bet feature.
  • The probability of a hit (any winning) is 26,80%.
  • The distribution of the winnings is 54% in the usual spins and 46% in the bonus features. There are included all: wish, bonuses and free spins.
  • The maximum payout during the tests was 500x. This is a high number for the slot with 5,51 volatility.
  • The average winning from the bonus feature was 25x. As you see, the random feature carries a low winning potential.
  • Volatility is 5,51 out of 20 (average). The main potential of winning can be released only in the bonus features. Like: sure free spins, the bonus wheel, wild reels and wild reels free spins.
  • The rating of the slot machine for the wagering is 5,95 out of 10. In the warm mode, Koi princess slot is running around the players starting balance, which is good for the wagering rating. If you see no auction - close the slot.
  • RTP of 96% allows getting a positive mathematical expectation of winning at the casino.

The bonus features

  • Sure win Free Spins. You are awarded 10 free spins. During this feature, the winning from each spin will be no less than the biggest winning of the Sure Win Free Spins. At the first spin, the guaranteed winning will be equal to the amount of the made bet (20 coins multiplied by the bet level in the standard game and 40 coins multiplied by the bet level by using the “The bonus bet” feature). Each new highest winning is adding 1 free spin to the player.
  • Wild Reels Free Spins: You are awarded 10 free spins, but they cannot be prolonged. During the spin, 1 to 5 reels can be covered with overlapping Wild symbols — their number and location change after each spin.
  • Bonus Wheel. You cannot understand from the first time, but this is a bonus game that allows you to win coins or launch the other two free spins modes which are described above. At first, in front of you will appear a three-level wheel, each of which is divided into 12 cells. You click on the bones and move around this bonus wheel, on which you will see different symbols. In one section there is an arrow that brings you closer to the middle. Having reached this goal, you can win up to 1000x.
  • Coin Win. This function gives you an immediate winning with a multiplier of x15 to x30, and this is the worst choice.


  • The number of reels is 5
  • The number of pay lines is 20 (always active)
  • The cost of one coin is from 0.01 to 1
  • The number of coins per line is from 1 to 10
  • The range of bet sizes ranges from 0.20 to 200
  • The maximum winning is x500 (five symbols wild)
  • Wild symbol - yes (Blue Wave)
  • Scatter - yes (Dragon)
  • Bonus free spins feature - yes (it is triggered with the help of the bonus game)
  • Bonus game - yes

How to win at Koi Princess slot? (conclusion)

Many of you know our golden rule - always test the machines in demo mode before you start playing for real money. Overall, we don't believe you can win big money here. The "cold" indicator is when you activate the Bonus Bet and the slot "cheat" that will trigger the feature with 3 fishes.

After such a situation, we strongly recommend changing the game. Always play with "Bonus Bet" because RTP is higher and your chance to activate a bonus is much higher. You can understand the "mood" of the machine from the first 20 to 40 spins, if you do not have any bonus features, better change the slot game. There are a lot of different opinions about bonus money wagering, but if you feel it is "hot," then you can try.

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User rating5 / 5
Written by Vladislav Dibrov
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