They need to add a consistent way to gain xp for towers that doesn't require battling. The way the game is now you need to win to gain xp for your towers but you need high level towers to win, this forces you to use the same three or four towers every game leading to a repetitive game play cycle that is hard to break out of.

its crashes more than any other game I have played, still kind of fun though only consider getting it if its on sale and you like JC3.

not worth it