
The game turned out to be more complicated than I thought it would be, and required a lot of graphics (all home-grown) and sound input. The app is also a bit bulkier than I intended (6 MB) but that's largely because of the MP3's I used (from NoSoapRadio).
The game itself is 100% free: no cost to download, no advertisements. You can get it on the android market, and hopefully soon on the Amazon android market (free there too!).
More games on the way...