The Princess Trinity Bonus is triggered by filling up the meter with winning combos. Moon Princess: Christmas Kingdom is a 5-reelonline slot game with bonus round, bonus spins, instant play, autoplay, video slots, multiplier, wild symbol. Once you fill the meter, you'll launch the Princess Trinity feature. This can only be filled up by landing three or more princess symbols. The three princesses. . Moon Princess is a 5-reel, line online slot game with bonus spins, instant play, autoplay, video slots, multiplier, wild symbol, mobile gaming, magic. Take a magical trip into the world of anime with Moon Princess , the online slot from Play'n GO. This can only be filled up by landing three or more princess symbols. Take a magical trip into the world of anime with Moon Princess , the online slot from Play'n GO. Moon Princess is a 5-reel, line online slot game with bonus spins, instant play, autoplay, video slots, multiplier, wild symbol, mobile gaming, magic. Triggering the free spins feature can be challenging, but the potential. This slot offers an adventure with a trio of girl heroes. Moon Princess · Moon Princess · Moon Princess Trinity · Moon Princess: Christmas Kingdom · Morgana Megaways · Motorhead · Mount M · Mr and Mrs Spy · Mr Cash. Moon Princess · Moon Princess · Moon Princess Trinity · Moon Princess: Christmas Kingdom · Moon Temple · More Turkey · Morgana Megaways. Once you fill the meter, you'll launch the Princess Trinity feature. The three princesses. This slot offers an adventure with a trio of girl heroes.