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Koi Princess

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Koi Princess is a feature rich slot machine from Net Entertainment released in late 2015. At first glance it's easy to see that the theme for this slot is taken from Asia, and as most people might have seen in the land based casinos, Asians love colors, sounds and frequent features. That's exactly what NetEnt have put together when they made Koi Princess. You can actually choose if you want to play it like a normal slot, or you can double the bet by activating a "bonus bet", this bet will make the features appear a lot more frequently. There's a random feature that can appear during any spin, and during this feature you can win one out of 4 different features. There's also a bonus game that is triggered by the in game bonus symbols, and this bonus have 4 different features that can be won. I can mention features like: sure win, expanding wilds, mystery prize and a bonus wheel. The maximal potential win per spin is 500x the stake during the normal spins, and 250x the stake if the bonus bet is activated, this is won by getting a full screen of wild symbols. The payout percentage is 96% without the bonus bet activated, while it's increased to 96.23% if the bonus bet is activated.

Game data

Slot name



Release date


Free spins

Bonus game


Koi Princess Net Entertainment 96.00-96.23% 2015-11-24 20




This slot machine is available on these casino platforms:
Computer, Mac, iPad, iPhone and other mobile devices.

18+ required - New customers only - BeGambleAware - T&C apply!


Read more about the game features below the screenshot!

Game screenshot

Game features


Let me first start off by mentioning the Bonus Bet that can be activated on this slot machine. This bet is turned off by default, and playing with it turned off will be like playing any other slot machine. If you however chose to turn it on, the total bet per spin is doubled. You will still play with the same paytable, which means that all pays are cut in half in relation to the total bet. The positive thing about this bet is that the frequency of the different features and bonuses is increased drastically, and it also increase some of the cash values in some of the different features that can be activated. This bet makes the slot less volatile, but it also raises the RTP slightly from 96.00% to 96.23%. So, should you activate the bonus bet or not? If you like frequent features, the answer is a simple yes!

Koi Princess has stacked wild symbols on all the reels, and these symbols substitute for all other symbols except the bonus dragons. The wild symbols are also the best paying combination, and they pay 500x the stake for a full screen during the normal bets, and 250x the stake per spin if the bonus bet is activated. There are two main features on Koi Princess, and they can both activate 4 different features or bonuses. The main feature is the randomly appearing Koi feature, while the main bonus is triggered by 3 scatter symbols.

Random Koi feature: The Random Koi feature can appear at the start of any spin, and it will zoom out the screen so that the reels get smaller. Sometimes this is just a prank from the slot machine, and it will zoom back finishing the spin, while it other times activate the Pick a Koi bonus. If the bonus is activated, 3 different Koi fishes will appear on the screen. Each of the koi's hide one of the four following bonuses: 5-Hit, Random Wilds, Wild Reels or the normal Bonus game. Whatever feature the Koi you pick hides, is the feature you will win.

This is the most boring feature and it activates 1 spin on the reels. It also activates a wheel of fortune spin with all the normal game symbols shown on it, whatever symbol the reel stops on is your winning symbol. This symbol will then be added to one position on each of the 5 reels forming a 5 of a kind combination, the reels will then stop so that additional combinations can be won.

Random Wilds: This feature will activate 1 spin where 4, 5, 6, 7, 8 or 9 wild symbols will be added to the reels one by one. The amount of wild symbols that will be added is random, and when they are added, the reels will stop spinning to create a winning combination.

Wild Reels:
This feature activates 1 spin where 2, 3, 4 or 5 expanded wild symbols will be added one by one to the reels. The amount of wild reels given is random, and the reels will stop spinning when the correct amount of wild reels have been awarded.

Bonus game: The bonus game can be triggered as 1 of the 4 features during the Random Koi feature, or it can be triggered by getting a bonus dragon on reel 1, 3 and 5. If two bonus dragons are shown on the reels, a third dragon can possibly nudge up or down on the reel it's missing on if it has landed just over or under the reels. It's not guaranteed to trigger the bonus as the symbol can nudge back to the original position, but you have a fair chance when it starts to nudge. If the bonus is triggered, a wheel of fortune wheel will appear on the screen. This wheel has 4 different bonuses, and whatever the wheel stops on will be the bonus you win. The two first ones are different free spin features named: Sure Win and Wilds Reels, the third bonus is a Bonus Wheel, while the forth one is a simple Coin Win.

18+ required - New customers only - BeGambleAware - T&C apply!

Free spins / Sure Win: This bonus starts off with 10 free spins. During these spins a guaranteed win equal to your total bet size is guaranteed for the first spin. If you win more that the guaranteed win, then you'll get that prize instead. All remaining spins will now reward you with a guaranteed win of at least what you won on the previous spin. This means that if you win €20 on spin number 3, you are guarantee to win at least €20 on each of the remaining spins. Each win that is higher than the previously guaranteed win will reward you with 1 extra spin. For the 5 first spins, one random wild will be added on reel 1, 2 or 3, while for all the remaining spins an additional wild will be added to reel 3, 4 or 5. The potential of this bonus is huge, as if you win 400x the stake on the first spin, you are guaranteed 10 spins with that same payout for each spin! It's not possible to re-trigger more spins than the ones added for the increased wins.

Free spins / Wild Reels: This bonus activates 10 free spins, and it works similar to the Wild Reels feature that can be won during the base game. During these 10 spins, at least 1 guaranteed wild reel will be added to the reels for each spin, but it's possible to get up to 5 added wild reels per spin. This means that it's possible to fill the whole screen with wild symbols for each of the 10 spins. The wild symbols will not stick to the reels for the remaining spins. It's not possible to re-trigger more spins.

Bonus Wheel: This bonus triggers a huge bonus wheel that consist of 3 individual reels laid outside of each other. You start off on the outer reel, which has 12 different spots. It has 10 cash values from x1 to x2 the total stake, 1 double up spot and one arrow. The cash values will be added to your total, while the double up spot will double all cash values shown on all the 3 reels, and then turn into an arrow. The arrow will send you to the second and mid placed reel. The way you move around on the wheel is by clicking on the dice that is placed on the right hand side of the screen. The first wheel has no bad spots, so you get to spin and collect cash prizes until you hit the arrow.

The second wheel also has 12 spots, but here only 6 of the spots has cash prizes from x1 to x3. The other spots are 4 collect spots that will end the bonus, one double up spot and one arrow. If you avoid the collect spots, it's possible to advance to the third wheel. This is the inner wheel, and it has 6 cash prizes from x1 to x3, 3 collect spots, 1 arrow that will reward you with a big cash prize shown at the center of the wheel (from x25 to x250 the stake), and 2 different bonus games that can be won. The bonus games are the Sure Win spins and the Wild Reels spins. The bonus ends when you hit a collect spot, when the inner cash prize is won, or when one of the two free spin features are won.

Coin Win: This is the bonus you want to avoid, and as the name says it's a simple coin win. A random amount between 10x and 30x the total bet will be rewarded, and you will return back to the normal slot play.

Casino to play at / Provider

Koi Princess is created by Net Entertainment.
Read more about Net Entertainment!

18+ required - New customers only - BeGambleAware - T&C apply!


18+ required - New customers only - BeGambleAware - T&C apply!

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