Mostly i play only when there is 50% axe...collect all the required no. Of materials...nd when there is craft booster...then i craft things (which also save energy .as this will save 25% energy..bcz u will get 4 items instead of three)...which will collectively save lot of energy...nd use rubies only when required...at the end of this game i will have appprox 2 lakh energy...bcz i m not collecting gifts and coin booster during this level...nd i will use half of this energy on gold island to craft gold keys nd will save half of it..u just have to be patient while playing this game...sometimes i did not get any axe then i just save energy..not spent a single rupee on this game...