Koi Princess is a 20 line slot game by NetEnt that comes with wild symbols, bonus symbols, 4 random features and the highest symbol appears stacked on all reels.
The game offers a huge amount of bonus features, 4 of them are random and can appear during any normal spin. When this happens, three Koi fish will appear and you have to pick one of them for your features.
Koi Princess slot game also comes with a bonus feature. Get three bonus symbols at the same time on reels 1, 3 and 5 to start this feature. If you get 2 symbols and the third symbol is just above or below the screen, a Koi can nudge it and still trigger the feature. When you get this feature you will spin a wheel which will determine the feature.
Koi Princess also has the option to activate bonus bet during normal play. This will cost you double your bet, but will also give a much higher bonus trigger rate.