Thanks for the comments guy. Get some 'droid phones!
@Jeku - Yeah, piracy is going to be a problem. Google have now added anti-piracy code which allows people to copy software, but they have to be signed into their Google account to play. It's too late for me to add this to this game. I've also considered Ads, but I've heard the money is rubbish for all but the most popular games. So it's a difficult situation.
I'm looking at this app as a trial app though, and to hopefully establish Hangfire Arcade in the market place somewhat. Then I can concentrate on doing things right for the next apps. We'll see. It's definitely unknown territory for me.