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

Personal testers opinion about Koi Princess Slot

Here it will be complicated to hit a huge win. The even 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 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 that numbers, you should think about shutting down this machine. Usually, if it is cold - it stays cold with the increasing the number of the spins. It reserves 46% of the winning pool for the bonus features and 54% to 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 (from 96% to 96,23%).

Review and recommendations from the testing team

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

  • It also has an extremely low priced winning combinations and relatively low payouts. In the main game, the slot practically does not keep the balance, and there is no reason to talk about its increment. You can only win with an additional feature or with a bonus game, which the slot activates 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 game, a 5-hit, a random wild and a wild reels. The slot usually gives these features with frequency, either by literally issuing 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 10-25 bets, but the feature wild reels are quite able to bring a big winning from 100+ bets.
  • The bonus also offers several game options: bonus wheel, coin win, wild reels free spins, sure win free spins.
  • Coin win is one of the worst choices. The winning on this feature is minimal and ranges from 10 to 30 bets.
  • Sure win free spins is quite an ambiguous bonus. If you're lucky to get a good combination at the first spins, then this amount will be added to all subsequent spins. Otherwise, the winning will be less than the one with Coin win. As you can see, the potential of this bonus is not high.
  • Wild reels free spins - I think this feature is the best of all. In each spin, we are randomly given from 1 to 5 wild reels, which can bring quite a large winning from x100.
  • Bonus wheel - theoretically one of the best bonus games, since on the wheel you can win about 20-100 bets and additionally get free spins or additional bets. In practice, the average win on this bonus game is 40-80 bets.
  • In conclusion, it can be said that the slot potential is not very large; winnings from x1000 are not possible even in theory. The slot has a quite high issuance 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 recommended for wagering.

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

  • PaytableThe frequency of falling 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 activated bonus bet feature.
  • The probability of a hit (any winning) is 26,80%.
  • Distribution of the winnings is 54% in the usual spins and 46% in the bonus features. In the features are included all functions: wish, bonuses and free spins.
  • The maximum payout during the tests was 500x. This is the 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 low winning potential.
  • Volatility is 5,51 out of 20 (low). 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 action - close the slot.
  • RTP of 96.23% allows getting a positive mathematical expectation of winning at the casino.

The bonus features

  • Wild symbolSure 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 changes after each spin.
  • Bonus Wheel. You cannot understand from the first time, but this a bonus game which 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.


  • WinningNumber of reels is 5
  • Number of pay lines is 20 (always active)
  • The cost of one coin is from $ 0.01 to $ 1
  • Number of coins per line is from 1 to 10
  • The range of bet sizes ranges from $ 0.20 to $ 200
  • Maximum winnings are х500 (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

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# Vladislav Dibrov 2018-10-14 03:42
We have added secrets (hidden parameters: volatility, wagering rating, review and recommendations of testing team) in the review of Koi Princess slot. Besides, you can find information about how often the bonus feature is triggered. The best choice for real money game is Fastpay casino. Here you will find instant withdrawals and fair play. For readers Fastpay offers VIP package 100% up to 250 Euro (0.1BTC) (40x wagering).