Let's start by taking a look at those randomly activated, base game bonuses. You'll know you've triggered one when three Koi Carp appear on screen. Pick one to reveal your bonus.
First up is the Fit-Hit Random - if you get this, the reels will spin once, landing on a 5 symbol combination to give you a guaranteed win.
Next is the Random Wild - once again you'll be given a single spin, this time with between 4 and 9 wilds randomly overlaid on the reels.
The Wild Reels Random feature will again offer a bonus spin, this time with reels 2 and 5 becoming stacked wild reels.
Finally, there's the Bonus Activation Bonus where you'll be awarded a randomly chose feature (of the 3 described above).
Find the bonus scatter symbols in reels 1, 3 and 5 and you'll trigger the other bonus rounds. You may get lucky with just two bonus symbols too. If there are 2 on the reels and it's a winning spin, a third can nudge onto the reels to trigger the bonus - there are 4 in all.
The Sure Win Free Spins will give you 10 free games with each spin offering a win at least the same as the largest amount won during the bonus spins. On spins 1 through 5, one overlay wild will appears on reels, 1, 2, 3 or 4. From spin 5 onwards another wild will be added to reels, 3, 4 or 5. If the win is lower than the guarantee, you'll instead be awarded the guaranteed amount. If it's bigger, you keep the bigger number and also be awarded another free spin.
Next are the Wild Reel Free Spins - you'll also be awarded 10 free spins here, with between 1 and 5 of the reels randomly filled with wilds.
The Coin Win does just what it says, paying out a cash bonus of between 15x and 30x your total stake.
Finally there's the Bonus Wheel where you can win coin prizes as well as activate the 2 fee spin bonus round features. Click the die at the side of the screen to spin the wheel. Land on a multiplier and you can boost a payout by between 1x and 5x. Land on a double up symbols and you'll double the multiplier values.
Find an arrow and you'll move a step closer to the centre of the wheel where the biggest prizes await (anything between 25 and 1,000 times your stake). Land on the Wild Reels Free Spins or Sure Win Free Spins and you'll trigger 1 of those features and close the wheel. You keep on rolling the die until you find a collect or hit the jackpot.
There's certainly plenty to keep you on your toes in Koi Princess thanks to the wealth of features on offer. The visuals aren't bad either - it has a cutesy Japanese feel set against a waterfall backdrop and accompanied by traditional music. In terms of sound and visuals, it's a typically solid effort from Net Entertainment.
This game is all about the features though. If you like plenty of variety in your slots then you certainly won't be disappointed here. Koi Princess has plenty to offer and is a welcome addition to the Japanese themed genre. If you like Asian-themed slots, Lights by NetEnt isn’t bad as to is Choy Sun Doa by Aristocrat.