Koi Princess Slot Sites: Top Picks to Play Online in UK
Written by Jamie Smith
Our full Koi Princess review of the NetEnt title gives players an insight into the release from 2015. With 96.00% RTP and low volatility, the game remains a popular choice at many of the top UK online casinos.
The best Koi Princess casinos offer super quick withdrawals from the cashier, with players not facing a long wait to get their hands on their winnings and plenty of different payment methods also available to pick from.
Best Koi Princess Casino Sites for 2026
| Position | Casino test reports | Rating | Bonus | Special features | Payout rate | Payout duration | Casino Games | To the provider | General terms and conditions |
|---|---|---|---|---|---|---|---|---|---|
 | |||||||||
| 1 | BetMGM | 5.0/5 | Enjoy 200 Free Spins When You Play £10 |
Visa, Mastercard, PayPal , Bank Transfer
Push Gaming, Relax Gaming, Hacksaw Gaming, Nolimit City, Playtech, Synot, Play'n GO, Games Global, NetEnt, Pragmatic Play, ELK Studios, Blue Guru Games, Peter & Sons, Alchemy, Evolution, Yggdrasil, Blueprint Gaming, Red Tiger Gaming, Inspired Gaming, Iron Dog Studio, Switch Studios, Northern Lights Gaming, Fantasma, Merkur, Big Time Gaming, Thunderkick, Quickspin, Slingo Originals, Novomatic, 1x2gaming, 4theplayer, Atomic Slot Lab, AvatarUX Studios, Bang Bang Games, , Bragg Gaming, Crucible Gaming, Eyecon, Four Leaf Gaming, Foxium, Gaming Corps, HungryBear, iSoftBet, Jelly, Just For The Win, Lightning Box, Octoplay, Playson, Playzido, Print Studios, RAW iGaming, Realistic Games, Red Rake Gaming, ReelPlay, S Gaming, Silverback, Snowborn Games, Spribe, Stakelogic, Storm Gaming, Wazdan, Williams Interactive |
97.89% | Up to 48 Hours | 3000+ | Claim Your Bonus! | T&Cs Apply New customers only. Opt-in required. Time to deposit/wager 7 days. Deposit £10 & wager 1x on casino games (wagering contributions vary) for 200 Free Spins worth 10p each on Big Bass Splash. 3 day reward expiry. 18+. Please gamble responsibly. BeGambleAware.org |
| 2 | Duelz | 4.9/5 | Up to 140 Free Spins When You Deposit £25 |
Trustly, PayByMobile, Bank Transfer, Visa, Mastercard, PaysafeCard, Skrill, Neteller, Payz, PayPal
Play'n GO, NetEnt, Evolution Gaming, Pragmatic Play, Games Global, Scientific Games, Big Time Gaming, Blueprint Gaming, Red Tiger, Relax Gaming, Push Gaming, ELK Studios, GAMOMAT, Quickspin, Yggdrasil |
95.14% | 2 - 4 days | 2009 | Claim Your Bonus! | Full T&Cs apply. 18+. New players. Min deposit £25. Up to 140 Free Spins (20/day for 7 consecutive days on selected games). Manually claimed daily or expire at midnight with no rollover. Free spin value £0.10. Max winnings £100/day as bonus funds with 10x wagering requirement to be completed within 7 days. Game restrictions apply. Play Responsibly! GambleAware. |
| 3 | Grosvenor | 4.8/5 | Deposit £20 and Get £40 Bonus + 100 Free Spins |
Visa, Mastercard, PayPal, PaysafeCard
NetEnt, Pragmatic Play, Play’n GO, NYX, IGT, WMS, Novomatic, , Playtech, Realistic Games |
97.15% | 1 - 3 days | 1675+ | Claim Your Bonus! | Full T&Cs Apply. +18. New players. Min Dep £20 (Excl. PayPal & PaySafe). Max Bonus £40 on selected games & 100 Free Spins on Big Bass Splash. Wagering & max win apply. GambleAware.org Play Responsibly. |
| 4 | Fitzdares | 4.8/5 | Coming Soon |
Visa, Mastercard, Maestro, Apple Pay, Bank Transfer
NetEnt, Blueprint Gaming, Microgaming, Evolution Gaming, Pragmatic Play, Realistic, Just For The Win, Inspired, Link2 Win, Skywind Group, Light & Wonder |
96.00% | 1 - 7 days | 2000+ | Claim Your Bonus! | Full T&Cs apply. 18+ Full T&Cs apply. Gamble responsibly. GambleAware.org |
| 5 | Fun Casino | 4.7/5 | Deposit and wager £10 for 100 Cash Spins |
Visa, Mastercard, PayPal, Trustly, Skrill, Neteller
Amatic, Blueprint, Evolution, IGT, Microgaming, Novomatic, NextGen, Play'n GO, Pragmatic Play, Relax Gaming, Stakelogic, Eyecon, Thunderkick, Big Time Gaming, Inspired, Hacksaw Gaming, NetEnt, Red Tiger, Slingo, ELK Studios, Nolimit City |
96.00% | 1 - 2 days | 2673+ | Claim Your Bonus! | New players only | Deposit & wager at least £10 to get free spins | Free Spins winnings are cash | No max cash out | Eligibility is restricted for suspected abuse | Skrill deposits excluded | Free Spins value £0.10 per spin | Free Spins expire in 48 hours | 18+ Full T&Cs Apply. GambleAware.org Play Responsibly |
Read on for the rest of our complete Koi Princess slot game review, with all the details of the NetEnt release like reels, theme, RTP and how the bonus game works.
Overview of the Koi Princess Slot Game
Koi Princess in Brief:
- Release Date: 2015
- Type: Video Slot
- Theme: Asian, Anime
- Software Studio: NetEnt
- RTP: 96.00%
- Volatility: Low
- Special Features: Bonus Wheel, Coin Win, Random Features
- Bonus Rounds: Sure Win Free Spins
- How to Trigger Bonus Round: Land 3 or more Scatter Symbols
Koi Princess is a game packed with slot features, with two separate bonus rounds with free spins available tempting players at UK online casinos to give the game a go. However, the low maximum win and average RTP could put some players off.
More About Online Slots
Full Rules & Information About the Koi Princess Online Slot
Gameplay on Koi Princess unfolds over a 5×3 grid of reels and there are 20 paylines in play from each spin of the reels on the NetEnt title.
Koi Princess Factsheet
| Reels | 5 |
| Rows | 3 |
| Paylines | 20 |
| Multipliers | No |
| Gamble Feature | No |
| Free Spins | Yes |
| Bonus Games | Yes |
| Jackpot | No |
| Min Bet | £0.20 |
| Max Bet | £5 |
Multipliers and jackpots are not part of the Koi Princess slot game action, but the low minimum bet is good news for players at UK online casinos.
Koi Princess Symbols & Payouts
Koi Princess slot symbols start with A-10 royals that have been given an Asian twist to fit in with the game’s theme. They act as the low-pays, while the premium symbols on the reels are gold pendants, a frog and a lion.
Three matching slot symbols are needed to pay out other than the top-paying Koi Princess icon itself, while there is also a lucrative Wild symbol to help to build those combos on the reels.
- All symbols: 10
- Highest-Paying Symbol: Wild
- Wilds: Wilds
- Paylines Pay: Left to Right
- Maximum Win: 500x the stake size
Koi Princess Bonuses & Features
NetEnt has included a lot of slot features on Koi Princess, ensuring that players at UK online casinos are in for an action-packed time when they spin the reels.
The game has four Random Features that are able to trigger in the base game. 5-Hit Random Feature guarantees a five-symbol win, while Random Wild Feature adds between four and nine Wild symbols.
Wild Reels Random Feature fills between two and five of the reels entirely with Wild symbols and Bonus Activation Random Feature will put at least three of the game’s special bonus symbols on the reels.
Those bonus icons are how players earn entry to the bonus game, with Sure Win Free Spins awarding 10 free spins to use on Koi Princess.
This round ensures that each of the free spins will pay out at least as much as the win from the base game that triggered the bonus game.
Koi Princess also has a special bonus round, with Wild Reels Free Spins cranking up the action. In this free spins round, at least one reel will be full of Wild icons, which boosts the chances of larger potential payouts.
NetEnt has also included a couple of other Bonus Features on Koi Princess. Coin Win pays players an instant coin win and the Bonus Wheel is a mini-game with a variety of rewards that are up for grabs.
Lastly, when two bonus symbols drop, Koi Princess can also trigger a nudge feature that might allow a third to come into view on the reels.
Similar Games & Best Alternatives
Koi Princess players are likely to enjoy other games with an anime-style design, with Aiko and the Wind Spirit and Moon Princess among the similar slots that are recommended.
NetEnt slots are among the most popular to try at UK online casinos, with the Swedish studio being the company behind smash hits such as Starburst and Gonzo’s Quest, which has spawned various imitations over the years.
Sure Win Free Spins a Sure-Fire Winner
With so many top slot features to enjoy such as the Wild Reels Random Feature, Bonus Wheel and the Sure Win Free Spins, NetEnt’s Koi Princess will still provide a lot of fun for players at UK online casinos, especially as the game has low volatility.
But a maximum win of just 500x the stake size is really quite low compared to most new slots, with Koi Princess showing its age in this area.