Moon Princess Slot Overview
Moon Princess is an anime-inspired slot from Play'n GO, released on 27 July 2017. Built on a 5x5 grid with Cascading Reels and a cluster-pay win system, the game draws clear inspiration from the Sailor Moon series. Three princesses, Love, Star and Storm, stand beside the reels and use unique powers to convert dead spins into potential winners.
What stands out here is the sheer density of features packed into what looks, on the surface, like a cute pastel game. Beneath the bright colours sits a very high-volatility math model, a progressive multiplier that can reach 20x, and a max win of 5,000x the stake. Compared to the studio's previous work at the time of release, Moon Princess was a bold design choice that proved hugely successful, later spawning sequels like Moon Princess 100 and Moon Princess: Christmas Kingdom.
Symbols and Paytable
All wins in Moon Princess form through clusters of 3 or more matching symbols connected horizontally or vertically. No traditional paylines are used. The Moon Wild is the top-paying symbol at 50x the bet for five in a cluster; it also appears automatically in the centre of any three-symbol winning combination after the cascade clears.
Love, Star and Storm each pay 10x for a five-of-a-kind cluster. A mixed combination of any princesses pays 5x. Low-paying symbols, a pink heart, winged bell, blue star and golden-green charm, return between 2x and 3x for five matches. The design choice to make all three princesses equal in payout keeps the focus on their powers rather than on chasing a single premium symbol.
I found the paytable values modest on their own, but the cascading mechanic combined with the progressive multiplier compensates well. Every successive cascade bumps the multiplier by 1, so even smaller cluster wins become meaningful as the chain extends.
Symbol Payouts
| 5 | x50 |
| 4 | x3 |
| 3 | x1 |
| 5 | x10 |
| 4 | x1 |
| 3 | x0.3 |
| 5 | x10 |
| 4 | x1 |
| 3 | x0.3 |
| 5 | x10 |
| 4 | x1 |
| 3 | x0.3 |
| 5 | x5 |
| 4 | x0.5 |
| 3 | x0.2 |
| 5 | x3 |
| 4 | x0.3 |
| 3 | x0.15 |
| 5 | x3 |
| 4 | x0.3 |
| 3 | x0.15 |
| 5 | x2 |
| 4 | x0.2 |
| 3 | x0.1 |
| 5 | x2 |
| 4 | x0.2 |
| 3 | x0.1 |
Bonus Features
Girl Power is the base-game modifier that fires randomly on any non-winning spin. Love transforms one full set of symbols into another type. Star drops 1 or 2 wilds onto the grid. Storm destroys two entire symbol sets, causing a large cascade. The active princess rotates after each activation, so you cycle through all three powers over time.
Princess Trinity is tied to a three-section meter on the left side of the grid. Only winning combinations involving princess symbols (or wilds alongside them) fill the meter: a three-of-a-kind fills one section, four fills two, and five fills all three. Once full, you receive a single bonus spin where all three princesses unleash their powers in sequence. The chain reaction that follows can clear large portions of the grid.
Free Spins trigger when you clear all 25 symbols from the grid during a single cascade sequence. You then pick one princess: Love grants 4 spins, Star 5, and Storm 8. During the round, the chosen princess fires her power on every non-winning spin and the multiplier does not reset between spins, climbing up to 20x. Filling the meter again awards extra spins (4, 3, or 2 depending on princess), capping at 20 total. Clearing the grid during Free Spins also adds a 100x instant bonus. I should note that triggering Free Spins at all is genuinely difficult; the requirement to empty the entire grid makes it a rare event.
Bonus Buy Options
RTP, Volatility and Max Win
Moon Princess has a default RTP of 96.5%, which sits above the industry average and is respectable for a high-volatility release. However, Play'n GO applies RTP ranges across its catalogue, meaning some casino operators may host versions set at 94.51%, 91.49%, 87.50% or even 84.50%. Checking the in-game rules before playing for real money is essential.
Volatility is rated at the highest possible level. Long dry stretches between meaningful wins are common, and the base game can drag a bit without the Girl Power triggers. The maximum win stands at 5,000x, achievable primarily through extended Free Spins cascades boosted by the 20x multiplier cap. Not a modern mega-win figure, but solid given the game's 2017 vintage.
