Nice, but i give you some to change or improve the game:
1. When picking up key in-game items, the music stops and the sound goes on later.
2. The word "Quest" it's already a very overused thing to write for game titles (like Rush, and others) since the Dragon Quest release.
But since the game is about a princess who wants to get her crown back, I would call it "Sylvia's Cute Recovery", or "Sylvia's Cute Revenge" or like that.
3. Graphically I don't understand if it is inside or outside the castle. And the boss isn't even wearing the crown that according to the description.
4. Can you made also an Standalone build for this game?