I really like this game, but it has flaws like most games do. The amount of gems you earn vs. the spend amount heavily encourages payment. Seems you stop earning troops after awhile, again encouraging gem use which encourages payment. Not sure if it is a thing but there should be harder difficulties (like stage 1 being 5x harder than before and rewarding better things than before!). There should be no limit on arena rewards either! For once I like pvp and limited rewards! Currently in top 25%.