I'm not a professional developer at all. I just do this for fun. So I charge accordingly: Nothing. No ads, either.
This game is called "Aliens In Allentown". You are Lieutenant Rick Barrett, who surprisingly finds himself battling aliens in the very unexpected venue of Allentown, PA. Seriously, shouldn't they have invaded New York City or Washington, DC?
Anyway, here is the trailer:
And here is the link on Google Play: