Hey I'm EGF BATISTA, this is my first post on the forum, never done it before. My request is for advice on an overall strategy...I'm at a point where I have to choose between buying units or expanding my bases income; and the usual with levelling and completing missions...do I try to keep up with units as I level up or do I increase income? I work a day job, so I collect twice per day 73million at the moment (air traffic towers) all need stars, so just enough to buy units or save to expand...what do I do?