Playing this game for more than 5 yrs.. ★In laboratory there is only one upgrade, this is a problem. Please make at least 2 or 3. ★while upgrading heroes, we cant use them for war, thats the drawbacks. Please think for it well ★this game has best strategies.. Add something more, provide some magical item to free users as well by conducting more events, occasions, challenges, rewards, WHAT IF YOU STARTS TO GIVE 5 GEMS PER WINNING A ATTACK PERFECTLY ?? you can do this.. Do this for your users.