Moon Princess Slot Review

Lines of three on a 5 x 5 grid

A win needs three or more identical symbols next to each other, either horizontally or vertically. Winning symbols disappear and those above drop into the gaps, which can create another match.

Every drop raises the factor that multiplies your prize, so a long series of drops is worth more than the same matches spread over separate spins. A Wild Moon can appear in place of the middle symbol of a winning combination, ready to substitute in the next drop.

The princess powers

When a spin fails to win, one of the princesses may appear at random and change the grid to create a win. Winning combinations also charge the Princess Trinity meter, which builds towards a special re-spin.

Clearing the board for free spins

The route to free spins is unusual: all 25 symbols have to be cleared from the grid in one sequence. That makes the bonus less a matter of scatters and more a matter of a long, complete chain.

Once there, you choose the number of free spins and the princess whose power can help on each spin. The multiplier keeps increasing through the sequence, and the studio says prizes can reach up to 20 times the ordinary amount. Clearing all 25 symbols during a free spin pays a planetary prize of 100 times the total bet, and the feature can be retriggered for up to 20 free spins in a row.

RTP versions and session cost

Moon Princess exists in five RTP settings: 96.5%, 94.51%, 91.49%, 87.5% and 84.5%. House edge ranges from 3.5% to 15.5%, so $1,000 of play costs $35 on average at the top version and $155 at the lowest.

That gap shows up quickly. A hundred $0.20 spins cost $0.70 on average at 96.5% and $3.10 at 84.5%; a hundred $5 spins cost $17.50 or $77.50. Which setting a site uses is visible in the game's information screen.

Volatility is High. Our data has no published max win figure.

Follow-ups and comparable titles

Three later titles share the name, all listed at 96.2%: Moon Princess 100 (2022, Very high volatility), Moon Princess Trinity (2023, High) and Moon Princess Power of Love (2024, Very high).

Hugo 2 from the same year lists 96.53% at High volatility, and Rise of Olympus (2018) matches the 96.5% headline with the same rating.

Who should try it

The grid rewards players who enjoy watching a board change shape and who do not mind that the main bonus depends on a rare full clear. Princess powers soften dead spins in the base game, but they do not change the High volatility rating. Anyone who prefers a scatter count they can track, or a bonus that arrives on a predictable schedule, may find the design frustrating.