This is an extremely cute entry!
As a game, this feels like something I could easily see kids playing as it is cute, innocent, and strikes all the right strings for being child friendly.
However, as a standalone title, it does seem to lack much in mechanics. With chest hunting being the only element of the game, it makes for an experience that is rather lackluster.
If your target audience was children, you hit it on the mark with some seriously nice soundtrack and artwork. If your target was everyone, I would recommend going back and adding a bit more to do.
Overall, solid and cute little game! Good job!