One of my favorite parts of the original Dragon Quest game is at the end, you can walk up to any of the NPCs and the congratulate you for all your efforts throughout the game. It really brought a smile to my face when the characters all were grateful for helping them out at the end of your game. Obviously your game is well written, designed, drawn, animated, and everything else people have already said, but I'll probably remember it most for all your characters being so thankful. It's funny how if I were to describe this feeling to someone they might not understand, but little touches like that show me when developers really care about investment in their narrative.