Moon Princess — Three Princesses Transform the Board
On a 5×5 grid, 3 or more connected matching symbols form a win, followed by cascades.
Each of the three princesses changes the board with a different power: scattering wilds, removing all symbols of one type, or transforming symbols into another symbol. You can choose a princess when entering free spins, and there is also a "Trinity" mode that uses all three powers.
The longer the cascades run, the bigger the results. Despite the theme, volatility is quite high.