My favorite skin is Windows XP, it's beautiful. This game is like Cookie Clicker, but I wish the gold I earned can be used to upgrade the knocking tool. This is because the longer I play, the harder it is to earn skins and the easier it is to earn gold, due to drop rates. At the end, I would be getting almost all gold and no skins, so with such an abundence of gold maybe I should be able to spend it to make my knocking faster.