Developers are liers ! They always keep telling us without spending money you can have a strong base ! NO ! For example if you you wanna full bb parts for apcs , if you don't spend more than 1000$ , it will take about 4 years to you have full bb parts ! But with spending money , in a week you can have full bb parts ! And X heroes ! If you want maxed X heroes , the only way is to spend money ! Very interesting ! Anything you want in this game , only money can help ! Game of money ! Keep lying !