Good first game, but however the difficulty increases too quickly to resolve that we would have to lower the price of the charms a little and increase it gradually over time, Also, add shadows, it helps to anchor the characters in the universe, Adds also variety in the enemies simply change the clothing color of 2 3 of them, and also animate the hearts in their eyes. Simply grow, then rake the hearts. (Also you forgot to enter the size of your game window in edit game Then integration option)