I can already tell by reading that your game will be entertaining for children and teenagers. You have “side things” which is even better. You even have a storyline, which can increases concurrent players (or players that come back sooner or later) I’m testing your game out right now and the style is excellent. You could increase the map’s size, add more side things, or fix constantly occuring bugs. Other than that this game will be fun! Might play it soon 
Something unrelated if you want to make it popular and test if it’s fun or not!