Unbalanced matches... win rate of monsterjack is like 20%... game decides who to win or lose...In app purchase is extremely expensive... The collected key always opens the cheapest chest... Some fights take too long and I won't spend my 15 mins to play one round to earn one stupid chest and 50 golds... Nobody has time for this so the duration of fight should be decreased. Even I play with the best strategy I have to lose as the game wants me to lose. I won't lose time with this game